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Masquerade Mortelle

A masked killer dances among the guilty — unmask the truth before dawn erases every lie.

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About this adventure

Baron Dubois lies dead in a locked room, and his murderer is still waltzing. Every guest at Château de Corbeaux Noirs wore a mask before the body was found — and Count Lefèvre has ensured they will keep wearing them until someone unravels who killed, who was truly meant to die, and who was never invited at all. Play as Théodore Vane, a quietly brilliant former Ministry investigator with nothing left to lose, or Victoire Anselme, a self-made private inquiry agent who received a cryptic warning and came anyway.

Prologue

Château de Corbeaux Noirs crowns its fog-wrapped hill like a jewel set in smoke — candlelit, garlanded with black roses, and alive tonight with the grandest masquerade of the season. String quartets fill gilded ballrooms, champagne moves in glittering arcs, and two hundred elaborately costumed guests drift between salons and shadowed terraces, every face hidden behind silk and painted plaster. It is the kind of evening designed to make the world feel beautiful, and therefore safe. Then, between the second and third waltz, someone found Baron Marcel Dubois in his locked study. He is not dancing. Dubois was a man who kept secrets the way other men keep fortunes — hoarded, leveraged, and never surrendered willingly. Half the guests in attendance had reason to want him dead. The other half may simply not have had the opportunity. Now the body is cooling, the killer is almost certainly still in the room, and Count Lefèvre has quietly delayed the unmasking hour. The masks stay on. The music continues. And somewhere beneath the chandeliers, among the grieving and the guilty and the simply afraid, the truth is still in attendance — waiting to be found before it slips into the fog.

Your AI Dungeon Master is waiting

Play Masquerade Mortelle and dozens of other AI-driven DnD adventures. Solo or with friends — free to start.

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Characters in this adventure

Pick a perspective. Each character shapes how the AI Dungeon Master tells the story.

Édouard Voss

Human · Duelist

A ruinously charming swordsman-for-hire attending under a stolen identity, whose elegant façade conceals a desperate mission — and a secret connection to the dead man that predates everyone else in the room.

Lucien Arquette

Human · Rake

A charming, debt-drowning young nobleman costumed as a black-feathered Venetian lord, whose easy laughter and dancing eyes conceal the desperation of a man whose entire future was held hostage by the dead Baron.

Sébastien Morel

Human · Spy

The impeccably composed head butler of Château de Corbeaux Noirs, whose flawless service conceals a decade of deliberate intelligence-gathering on behalf of interests far beyond the household staff.

Céleste Renard

Human · Infiltrator

A quick-fingered maid with a hidden past and a stolen secret, playing the role of invisible servant while quietly unraveling under the weight of what she knows.

Marguerite Voss-Pelletier

Human · Poisoner

A composed and brilliantly educated apothecary's widow who moves through the masquerade with the quiet authority of a woman who has nothing to prove and everything to protect — though the particular expertise she carries in her reticule makes her the most technically dangerous suspect in the room.

Isabeau de Crantière

Human · Socialite

A luminously charming aristocratic widow whose flawless social performance conceals the fact that she was Dubois's most recent blackmail victim — and his most recent lover — and that the line between those two arrangements was never entirely clear to her.