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.

After a young girl goes missing in Queens, the team discovers the kidnappers used her as leverage to carry out a major explosives heist, sending them on a hunt for the dangerous culprits. Meanwhile, Scola and Dani begin working on their footing as partners.

When a CEO is killed by a targeted explosion inside his penthouse, the team must work to figure out how someone accessed the highly secure building. Their task is further complicated when they discover the crime may be the work of an artificial intelligence program. Meanwhile, Maggie pumps the brakes on her personal life.