A modern-day homicide detective finds herself in Victorian Scotland—in an unfamiliar body—with a killer on the loose. May 20, 2019: Homicide detective Mallory is in Edinburgh to be with her dying grandmother. While out on a jog one evening, Mallory hears a woman in distress. She’s drawn to an alley, where she is attacked and loses consciousness.May 20, 1869: Housemaid Catriona Mitchell had been enjoying a half-day off, only to be discovered that night in a lane, where she’d been strangled and left for dead . . . exactly one-hundred-and-fifty years before Mallory was strangled in the same spot.When Mallory wakes up in Catriona's body in 1869, she must put aside her shock and adjust quickly to the reality: life as a housemaid to an undertaker in Victorian Scotland. She soon discovers that her boss, Dr. Gray, also moonlights as a medical examiner and has just taken on an intriguing case, the strangulation of a young man, similar to the attack on herself. Her only hope is that catching the murderer can lead her back to her modern life . . . before it's too late.