When a famous mystery writer disappears just days before Christmas, a Christmas house party at a remote English estate turns into a thrilling race against time in this rivals-to-lovers romantic mystery by New York Times bestselling author Ally Carter.

Maggie Chase is the queen of cozy mysteries. Ethan Wyatt is the king of high-stakes thrillers.

She can’t stand him.

He’s convinced her name is Marcie (even though she’s corrected him a dozen times).

But when they both receive an enigmatic invitation to attend a holiday party at the home of a reclusive fan, neither expects their host to be the most powerful author alive: Eleanor Ashley, the notorious Duchess of Death.

That night, a snowstorm hits, and by morning, Eleanor has vanished from a locked room.

Now, Maggie is left wondering: Is Eleanor in danger, or is this all part of some twisted test? Is Ethan a rival, or could he be her only ally in this strange mystery?

As the snow piles up and the stakes rise, every clue they uncover brings them closer to the truth—and each other. To save Eleanor, Maggie and Ethan will need to put their rivalry aside and become partners (and maybe more).

But first, they’ll have to survive each other.