Following a mysterious and catastrophic incident in the precinct, Bright faces an internal affairs review as Gil and the team worry about his mental health.

Malcolm takes a detour from his mandated vacation time when he finds out a killer on the loose is mimicking homicides from one his favorite children's books, "The Count of Monte Cristo." With added help from a very excited Martin Whitly, the NYPD trace the case back to a high society family planning one of the biggest weddings of the season, so Malcolm and Dani get dressed up to attend the event and track down their culprit.

Jessica continues to search for more information on the "Girl in the Box," but is confronted by the "Carousel Killer," who has a very public vendetta against the Whitlys. While the NYPD investigates families tied to Martin's victims, it's ultimately up to Malcolm and Jessica to track down the tip-line caller, turned killer, who is blackmailing her. Meanwhile, Ainsley receives a big promotion at work, but quickly realizes she may never escape the high demand for serial killer reports.

When a body is found professionally preserved and embalmed, the NYPD teams up with Edrisa to go undercover at a convention of funeral directors. While there, they discover their top suspects - morticians Tilda and Dev - who used to be in business with the victim. Then, enter the mind of a serial killer as Martin revisits his past through a series of hallucinations.

When a motorcycle gang robbery turns into a murder, Malcolm and team are called to the scene to investigate. While he's working on a profile, he runs into an old friend from boarding school, licensed insurance investigator Vijay (guest star Dhruv Singh). Together they work to uncover the identity of the murderer and his accomplices who stole millions in watches. Meanwhile, Martin blackmails Jessica, exchanging his silence about who stabbed him for more quality time with his son.

The NYPD dives into a case surrounding a famous mommy blogger, whose husband was mysteriously stabbed just days after their baby was born. Meanwhile, Bright finds his way back to Eve, but can't shake his paranoia that there's more to her than meets the eye. To help ease his nerves, Ainsley helps him do some investigating and uncovers a secret she has been keeping.

When an up-and-coming ballet dancer is mysteriously poisoned, the NYPD dives deep into the rigorous world of dance. Meanwhile, Jessica reunites with an old friend, socialite Nicholas Endicott, and Bright and Eve turn to Martin for answers regarding the girl in the box.