After Portland homicide detective Nick Burkhardt discovers he's descended from an elite line of criminal profilers known as "Grimms," he increasingly finds his responsibilities as a detective at odds with his new responsibilities as a Grimm.

Sarah Barlow and Linda Wells are two mothers who give birth on the same day in the same hospital. Eighteen months later, a DNA test proves the infants were switched at birth by the hospital.

A computer scientist invents an experimental artificial intelligence that can manage and control all the functions for his vacation cabin in the woods. When he gives it a female personality, it becomes a little too managing and controlling, resulting in deαdly consequences.