The team is called in to track down a serial killer after the bodies of multiple women with the same physical description are found scattered across the city. Meanwhile, Maggie juggles her roles as a guardian to Ella and an FBI agent.

As Maggie and the team search for New York's latest serial killer, the copycat method used by the murderer forces Maggie to seek help from Ray Distefano, the serial slasher she put behind bars.