Kembral Thorne is spending a few hours away from her newborn, and she's determined to enjoy herself at this party no matter what. But when the guests start dropping dead, Kem has no choice but to get to work. She is a Hound, after all, and she can't help picking up the scent of trouble.She’s not the only one. Her professional and personal nemesis, notorious burglar Rika Nonesuch, is on the prowl. They quickly identify what’s causing the a mysterious grandfather clock that sends them down an Echo every time it chimes. In each strange new layer of reality, time resets and a sinister figure appears to perform a blood-soaked ritual.As Kem and Rika fall into increasingly macabre versions of their city, they’ll need to rely on their wits—and each other—to unravel the secret of the clock and save their home.