The Gralhund Conspiracy Unveiled
The Gralhund Conspiracy Unveiled
A masked figure's theft of a noble's heirloom leads the party into the web of House Gralhund's political machinations in Waterdeep. The adventurers must navigate the city's treacherous social landscape, uncover hidden blackmail, and stop an assassination plot that could topple the Open Lord himself.
Read Aloud
You arrive at the imposing gray stone mansion of House Gralhund in the Noble's District, its facade adorned with gargoyles frozen mid-snarl. A silver-tongued servant named Pentus meets you at the iron gates, his smile taut and professional, and escorts you through corridors lined with oil paintings of stern-faced ancestors. The air smells of expensive leather and mahogany. You're shown into a parlor where Lady Nimue Gralhund awaits—a sharp-featured woman in her fifties, her hands clasped so tightly her knuckles have gone white. On the table before her sits a shattered music box, its delicate mechanism exposed like a wound. She tells you flatly: the Weeping Phylactery was stolen two nights ago, and the Lord's Alliance will pay 100 gold each if you recover it before the Masked Lord's Masquerade tomorrow night.
Description
The party is hired by Lady Nimue Gralhund to recover a stolen heirloom—the Weeping Phylactery, a music box with minor magical properties (it grants advantage on Insight checks when heard during negotiations). The theft occurred during a social gathering; entry to the estate showed no signs of forced entry. Pentus the servant can provide witnesses—three guests were present: a merchant named Saladrex, a bard named Valestra Moonwhisper, and a cloaked figure no one remembers clearly. Lady Nimue is visibly agitated, far more than the object's material value would justify. A DC 14 Insight check reveals she fears something worse than the theft itself. If pressed, she mentions a rival house, House Nimblewright, but immediately regrets bringing them up—a sign she's holding back information.
DM Notes
This scene establishes the job and introduces the core mystery. Nimue is afraid of something beyond a stolen music box—she believes the thief is gathering leverage against her family. If players ask detailed questions about the theft, mention that servants saw muddy footprints on the third-floor balcony but no corresponding footprints leading away (suggest flight or magic). Offer a lead to either Saladrex at the Waterdeep Market or Valestra at the Copper Cauldron tavern. The cloaked figure remains mysterious—their identity is the session's central twist. Allow PCs to ask for more payment (negotiate up to 150 gold total if they push) or security access to the estate.
Read Aloud
Waterdeep's Market sprawls before you, a chaos of vendor stalls, haggling voices, and the smell of salt fish and spiced meat. Saladrex operates from a stall draped in Calimshan silks, his bronze skin glistening with oil as he arranges bottles of exotic perfume. When you approach, he smiles too wide, and his left eye twitches—a nervous tic. He admits to being at the Gralhund estate but claims he never entered the parlor where the phylactery was kept. He was in the library with Valestra, he says, discussing a merchant deal. But a DC 13 Insight check reveals he's lying about something; his story is rehearsed, too smooth. When pressed (Insight vs. Deception DC 14), he cracks: he was asked to spy on the Gralhund family's business dealings, but he didn't steal anything. He paid off by a figure he never saw—coins left in an alley near the South Ward Gate. He's terrified but won't name names, muttering about debts to "the wrong people" and House Xanathar. This encounter is purely social challenge.
Description
Saladrex is a mid-level merchant caught between factions. He provides the party with a crucial clue: the thief is working for someone interested in Gralhund family secrets, not the object itself. He mentions that Valestra Moonwhisper was also at the party and seemed unusually interested in the phylactery's music. If the party threatens violence, Saladrex offers information freely—the identity of his mysterious benefactor is unknown, but he suspects a noble house based on the money offered. He overheard someone in the alley mention "the Mask" before depositing coins, but he fled before seeing who spoke. The party learns the theft is part of a larger scheme involving blackmail, not simple burglary.
DM Notes
Use this scene to deepen the mystery and hint at larger political machinations. Saladrex is cowardly but truthful when scared. Allow Intimidation (DC 14), Deception, or Persuasion checks to extract information. If players show mercy, he offers to help later (plot hook). If they threaten him badly, he clams up and seeks protection from the Xanathar's guild—creating a complication. Mention that Valestra was wearing a strange ring during the party, and Saladrex accidentally saw it glow faintly before he left the library. Lead them toward the Copper Cauldron tavern as the next location.
Read Aloud
The Copper Cauldron is a tavern favored by adventurers and scribes—warm hearth light spills onto wet cobblestones, and the sound of lute music drifts from its open door. Inside, the tavern reeks of spiced wine and old wood. You find Valestra Moonwhisper at a corner table, a striking half-elf woman with silver-threaded hair and tired eyes. She's nursing a drink and sketching in a leather journal. When you approach, she doesn't look surprised; instead, she sighs and closes the journal slowly. She admits freely that she stole the phylactery—but not for money. She was hired by Lady Gralhund's own brother, Lord Kalamvor Gralhund, who believes his sister has been embezzling family funds for years. The phylactery contains a musical cipher in its melody that encodes proof of her corruption. She asks the party for a choice: help her expose Nimue, or return the phylactery and collect the reward. She pulls out the music box, now repaired, and lets its melody play—if the party has anyone with magical training (Arcana DC 12), they can hear the faint encoded whispers beneath the notes.
Description
Valestra Moonwhisper is a bard of modest renown who has fallen into employment with various noble houses. She reveals that the theft was commissioned by Lord Kalamvor Gralhund, Nimue's younger brother, as part of an internal family dispute over money and power. Valestra has the phylactery in her possession and is willing to negotiate. She's not inherently evil—she's desperate for coin and was promised 300 gold for the job. If the party questions her, she reveals that Kalamvor believes Nimue has been bleeding the house dry through secret accounts, money that should fund the Gralhund's political influence in Waterdeep. The musical cipher is real: it's a recording of financial transactions in code. This scene forces an ethical choice: the party can turn Valestra in (losing her as an ally), negotiate with her (gaining information), or accept a third option—investigating Kalamvor's claims independently.
DM Notes
Valestra is a tragic figure, not a villain. She's tired of mercenary work and wants out. If the party shows compassion (Insight or Persuasion check DC 13), she offers to cooperate and help expose whatever the truth really is. She can provide access to Kalamvor via a private meeting at the Serpent Hills at dusk. She mentions that Kalamvor fears for his life—he believes Nimue has hired assassins to silence him before he can present the evidence to the Open Lord. The party now faces a political dilemma: is Nimue corrupt, is Kalamvor paranoid, or are both true? If Valestra is turned over to the authorities, she'll be imprisoned, and Kalamvor will disappear, becoming a future complication. The optimal path is to gain her trust and arrange a three-way meeting.
Read Aloud
You climb toward the windswept ruins of Serpent Hills as twilight paints the sky crimson and gold. The crumbling white stones of ancient temples jut from scrubland like broken teeth, and shadows pool between them. The air grows colder as you ascend, carrying the scent of earth and distant rain. Lord Kalamvor awaits near a toppled archway, a gaunt man in his forties with his sister's sharp features and haunted eyes. But before he can speak, three figures in black leather emerge from the ruins around you—assassins with the distinctive silver scorpion tattoos of House Xanathar. Kalamvor cries out a warning, and one of the assassins draws a crossbow. Combat is about to begin.
Description
An ambush encounter in a semi-ruined temple complex. Three Xanathar assassins have been hired to kill Lord Kalamvor to prevent evidence of Gralhund family corruption from reaching the Open Lord. The terrain offers multiple levels and crumbling stone walls (difficult terrain). Kalamvor himself is sheltering behind a large altar block. The assassins are professional but not elite—they intend to kill Kalamvor quickly and fade into the city. If the party defeats them in combat, they find letters on the assassins' bodies: a contract signed "The Mask" offering 500 gold for Kalamvor's death. The identity of "The Mask" remains unclear, but the letter mentions a meeting at the Gralhund Estate the following evening. This is a Medium combat encounter suitable for four level-5 characters.
DM Notes
The assassins target Kalamvor with lethal force but will flee if reduced to half HP as a group, recognizing they're outmatched. Kalamvor has basic combat stats but is not intended to be a major combatant—he's fragile (HP 22, AC 14). Use the terrain to create tactical depth: stone pillars provide half cover, the ruined courtyard is 40 feet across, and distant ruins offer elevated positions. If the party captures one of the assassins alive (using non-lethal damage), they can interrogate them for the Xanathar connection and learn that the contract came through intermediaries. The Xanathar is not the true villain—they're simply a tool. The real conspiracy lies within House Gralhund itself.
Read Aloud
Night cloaks Waterdeep as you return to the Gralhund Estate with Kalamvor in tow—and a letter from the assassins' contract. Pentus the servant meets you at the door, but his expression has shifted from professional courtesy to cold calculation. He steps aside, and from the shadows of the great hall emerges Lady Nimue herself, flanked by two guards in Gralhund colors. But she is not alone. A third figure steps into the light—a woman whose face you now recognize: it is Pentus's twin sister, Penelope, bearing the silver scorpion tattoo of the Xanathar on her wrist. Nimue's voice cuts like ice: "I am grateful for your... assistance... but you've become a liability. The phylactery will remain mine, my brother will see reason, and you will forget this ever happened. Or you will not leave this estate." The situation has escalated beyond simple theft—you now stand before the conspiracy's architects, and they are prepared to ensure your silence permanently.
Description
The revelation unfolds: Lady Nimue hired Penelope Gralhund (Pentus's sister, herself a disguised Xanathar agent) to steal the phylactery not because Kalamvor's accusations are false, but because they are absolutely true. Nimue has been embezzling family funds for five years to pay for her own political faction within Waterdeep—she intends to bid for Open Lord at the next election and needs liquid capital. Kalamvor discovered the scheme, and Nimue ordered his elimination. However, a third twist exists: Pentus (the male servant) is genuinely loyal to House Gralhund and did not know his sister had infiltrated the house as his replacement. If the party has befriended Valestra or shown mercy to Saladrex, these NPCs may appear as backup reinforcements. The party can now choose: fight Nimue's guards and arrest her (combat), negotiate using blackmail (social challenge via the assassins' contract), or appeal to Pentus to turn against his sister (Persuasion DC 15, advantage if they've treated him respectfully earlier). The optimal resolution allows for multiple paths to victory.
DM Notes
This scene is the climax. Present it as a negotiation first—Nimue believes she's in control and is willing to monologue about her ambitions. Use this to allow players to gather their wits and plan. If they fight, make it clear that victory is possible but will involve significant resources. The guards are loyal but not fanatics; they'll surrender if Nimue is incapacitated. Penelope is the wild card: she's a trained assassin (higher stats than regular guards) and will attempt to flee if combat turns against Nimue, potentially escaping into Waterdeep's streets. If the party negotiates successfully, Nimue will agree to resign from politics, accept minor exile, and sign documents transferring her embezzled funds back to the house—but she'll swear vengeance, creating a long-term nemesis. If Pentus is turned, he provides crucial assistance (granting advantage on attack rolls against his sister and her guards for one round). Allow players agency in determining Nimue's ultimate fate.
Monsters
Tactics
The three assassins are led by a veteran operative named Krace who targets Lord Kalamvor first with crossbow bolts, attempting to drop him in the opening round. The other two assassins flank the party, using hit-and-run tactics and focusing on enemies who attempt to reach Kalamvor. They use the broken terrain for cover (half-cover behind pillars) and attempt to maintain distance. If combat begins to turn against them (half the party's health remaining or more than one assassin reduced below half health), they execute a coordinated retreat, heading toward the ruins' edge. They are professionals and will not fight to the death, valuing survival and escape. They employ Cunning Action (Dash or Hide) to maintain tactical advantage. All three carry hand crossbows and poison-coated bolts (poison deals 1d6 additional poison damage on hit, DC 12 Constitution save for half).
Terrain
The ruins of Serpent Hills are a broken temple complex scattered across uneven ground. Stone pillars (10 feet tall) are spaced 20 feet apart, providing half-cover. Rubble and fallen stones create difficult terrain in scattered patches. A large altar block (providing three-quarter cover) is positioned 30 feet from the party's entry point. The elevation changes throughout the encounter—some areas are 5-10 feet higher than others. A narrow ravine (15 feet wide) runs along the eastern edge of the encounter area; falling into it requires a DC 13 Dexterity check and deals 1d6 fall damage. The ruins offer multiple escape routes to the north and east. Twilight lighting imposes disadvantage on Perception checks beyond 60 feet but does not impose the blinded condition within the encounter area.
Monsters
Tactics
This encounter can escalate from negotiation to combat. If combat begins, Nimue uses ranged spell attacks from cover behind her guards, casting Fireball at clustered enemies or Suggestion to control party members. She avoids melee combat and uses Counterspell to shut down party spellcasters. The two Gralhund guards (identical twins trained since childhood) flank and attack with longswords, focusing on melee threats. They fight professionally but are not fanatics; they will surrender if Nimue is incapacitated or if a party member successfully negotiates with them (Persuasion DC 14, advantage if the party appeals to house honor). Penelope, Nimue's conspirator (a CR 2 assassin hidden in shadow), emerges only if combat lasts beyond round 2; she uses ranged attacks and will attempt to flee if the party corners her. The guards wear plate armor (AC 17) and carry longswords (1d8+3 slashing). Nimue wears hidden magical scale mail (AC 16) and carries a magical dagger (1d6+2 slashing, 1d4 poison damage).
Terrain
The encounter takes place in the great hall of the Gralhund Estate, a 60-foot-wide chamber with 30-foot ceilings. A grand staircase dominates the north wall. Pillars support the ceiling, providing half-cover. Alcoves with statues line the walls. Furniture (tables, chairs) provides half-cover but can be overturned as bonus actions. Doorways lead to other chambers (libraries, kitchens, etc.). Nimue positions herself on the grand staircase's landing, giving her 10 feet of elevation advantage and making her harder to reach. The guards stand between her and intruders. If the party attempts to flee, Nimue orders her guards to pursue, turning the encounter into a chase scene through the estate. Multiple exits exist, offering non-violent solutions to overly aggressive approaches.
150 gold pieces split equally among the party (the original payment from Lady Nimue, plus bonus promised by Lord Kalamvor for saving his life). Additional 100 gold pieces offered by Kalamvor after the conspiracy is fully exposed and House Gralhund's honor is defended.
The stolen music box, now safely returned. It is a beautiful object of polished wood and silver, worth 75 gold pieces to a collector. When played, it grants advantage on Wisdom (Insight) checks during negotiations for 1 hour after being heard. The party can return it to Kalamvor (strengthening his favor) or keep it (gaining a magical aid).
Correspondence from the Xanathar's organization detailing the contract on Kalamvor's life, signed by 'The Mask' (later revealed to be Nimue). These documents are valuable evidence and can be used to negotiate with city officials. Returning them to the Watch Captain or Lord's Alliance earns an additional 50 gold reward and favor with Waterdeep's authorities.
A professional assassination kit worth 25 gold pieces containing poison, lockpicks, disguises, and specialized tools. The party can sell it or use it (granting proficiency in Stealth and lockpicking for whoever carries it, if they don't already have it).
A fine dagger with a silver handle and a blade etched with faint protective runes. It is a +1 weapon dealing 1d6+1 slashing damage (or 1d4+1 if used as a finesse weapon). It grants advantage on Deception checks made while wielding it—a dark magic tied to Nimue's personal ambition. Worth 150 gold pieces to a buyer, or can be kept by a party member. If kept, it should require an attunement or cost—the party member wielding it gains advantage on Deception checks but disadvantage on Insight checks as they become more inclined to self-deception.
Lord Kalamvor grants the party a formal letter bearing the Gralhund family seal, introducing them as 'trusted allies and agents of House Gralhund.' This grants advantage on Persuasion checks when dealing with nobles or merchants in Waterdeep who respect the Gralhund name. It has no monetary value but opens doors in the city's upper echelons.
Story Hooks
The conspiracy exposes deep corruption within Waterdeep's noble houses. The party's actions directly influence the race for Open Lord—if Nimue is imprisoned or exiled, a power vacuum forms that other houses will attempt to fill. Kalamvor offers the party future work investigating political corruption in other houses, creating a long-term patron relationship. The Xanathar's organization bears a grudge for the party's interference and may seek revenge through hired assassins in future sessions. Valestra, if redeemed, becomes a bard contact in Waterdeep who can gather intelligence and provide information about criminal elements in the city. The revelation of Penelope as a Xanathar spy suggests deeper infiltration of the city's noble houses, hinting at future conspiracies and opportunities for espionage-focused adventures. The party's handling of the conspiracy (merciful vs. ruthless) determines whether they gain House Gralhund as an ally or create enemies among its remnants.
Conclusion
Wrap Up
After the confrontation at the Gralhund Estate concludes—whether through combat, negotiation, or a combination of both—the party has successfully unraveled a conspiracy that threatened both a noble house and the life of an innocent man. Lord Kalamvor, freed from the threat of assassination, is grateful and declares the party true friends of House Gralhund. The stolen phylactery is recovered, and evidence of Nimue's embezzlement is secured. In the aftermath, Waterdeep's authorities (the City Watch and the Lord's Alliance) become aware of the conspiracy. If the party collaborated with these factions, they earn the respect of Waterdeep's power brokers. If they handled matters privately, Kalamvor quietly ensures their role remains protected. The night ends with the party returning to Waterdeep's streets, the city's glittering towers around them, knowing they have altered the course of noble politics and saved at least one life from the shadows. Rewards are distributed, and relationships are established with NPCs who can become recurring contacts or allies. The party is invited to a quiet celebration at the Gralhund Estate the following evening, where Kalamvor toasts them as the saviors of his family's honor.
Cliffhanger
However, as the party departs, they notice something troubling: among the guards who arrived to arrest Nimue and secure the estate was a figure they did not recognize—a cloaked woman wearing the same silver scorpion tattoo as Penelope. As the party's eyes meet hers, she smiles knowingly and disappears into the crowd. It becomes clear that the Xanathar's infiltration runs deeper than anyone suspected. This mysterious woman is already filing a report to her handlers about the party's interference, and the guild has begun marking them as threats. The campaign's larger arc has begun: the party has made a dangerous enemy, and Waterdeep's criminal underworld is taking notice.
Next Session Hooks
- The Xanathar's Revenge: The guild begins subtly harassing the party through thieves, spies, and hired thugs. The mysterious scorpion-tattooed woman orchestrates escalating attacks, each one a probe to test the party's defenses. The party must decide whether to ignore the harassment, strike back, or attempt to infiltrate the Xanathar's organization to learn who has marked them for death.
- The Race for Open Lord: With Nimue eliminated from the political race, her faction splinters. Kalamvor asks the party to investigate other candidates for Open Lord, suspecting that multiple houses are engaged in similar corruption. This opens a subplot where the party becomes Waterdeep's unofficial investigators of noble crime, earning powerful allies and enemies in equal measure.
- Valestra's Unfinished Business: If Valestra was redeemed and aided the party, she reveals that her employment with various houses has given her knowledge of a darker secret—there is a cult operating in the cellars beneath Waterdeep, one that worships an unknown entity and is recruiting nobles and merchants. She offers to help the party investigate, leading toward a longer dungeon-delving campaign arc that combines political intrigue with eldritch horror.
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