When Mackenzie Jones, a former homicide detective fleeing her past, stumbles upon a body outside a sleepy Idaho diner, she's thrust back into the world she tried to leave behind. The quiet book club she joined for company and gossip suddenly becomes the epicenter of a chilling pattern.

As the local police—led by the rugged but secretive Detective Steele—struggle to connect the dots, Mackenzie's sharp instincts and investigative skills pull her deeper into the mystery.

With a mysterious dog by her side, a growing body count, and suspicion closing in on her, Mackenzie races to unravel a killer's twisted plot before the next murder.