Knives Out meets Downton Abbey in this cozy, clever, darkly hilarious locked room mystery starring an unforgettable intergenerational detective team.

Cornwall,1910

The Viscount of Tithe Hall, the sprawling estate also known as World's End, has sealed himself in his study, preparing for the apocalypse he believes will arrive with Halley’s Comet. But when morning comes, he’s found dead—murdered by his own ancestral crossbow. All eyes turn to Steven Pike, the newest staff member: a down-on-his luck servant fresh out of a detention center and on his last chance.

Steven must race against time to uncover the true killer before he’s framed for the crime—alongside the irascible, foul-mouthed Miss Decima, the viscount's elderly aunt who’s been locked away from society for decades. Bad-tempered but sharp as a tack, Miss Decima isn’t about to miss the excitement of a murder in the house. With Steven at her side, she’s determined to solve the mystery.

Joined by Temperance, Miss Decima’s long-suffering lady’s maid, the unlikely trio will dig into the secrets of the Stockingham-Welt family and the staff who haunt the hidden corners of the estate. But with the murderer still on the loose, can they solve this impossible crime before it’s too late?