Bex and the team track the brilliant and beguiling Jenna Wells, the notorious Killer Chemist whose therapy in the Pit has made her even more dangerous and deranged.

Bex and the team must hunt down escaped inmate Xander Wax, a killer with a knack for poisoning through unpredictable methods. Things back at the Command Center come to a head.

Bex and the team hurry to catch Elliot Carr, a high-end shoemaker and serial killer known as the Connecticut Cobbler. Elliot has a fresh approach that the team must figure out before more people find themselves flayed.

The team races to find Nancy Albright, a person with a drug addiction searching for a new type of high. Back at the Command Center, the team is also forced to come to terms with new revelations about once-trusted individuals.

The team pursues Dr. Sidney Fairfax, a twisted neuroscientist who mutilates the brains of his victims. As the case unfolds, Bex realizes the doctor may have not only the key to larger mysteries surrounding the Pit, but insight into Shane's past.

Serial killer Byron May is back on the streets and secretly living inside someone else's home. With his new skills resembling the currently incarcerated Eastside Ripper, suspicions abound as to whether the wrong man might be in prison.

Bex must fight to have the Hunting Party team reinstated so that they can catch the infamous "Boogeyman" killer, Ron Simms (guest star Eric McCormack), who targets women searching for love.

When a massive explosion at a top-secret prison known as the Pit allows notorious serial killer Richard Harris to escape, disgraced FBI agent Bex Henderson is called back into action to hunt him down before he kills again.

Clayton Jessup, a deranged serial killer who targets happy families, is on the loose and looking to kill again. The team must race against time to stop him before it's too late. Bex learns who she can and can't trust.

Bex and the team race to catch Mark Marsden, known as the Widower, a handsome and charming serial killer who murdered three of his wives in cold blood. Everything changes when Mark decides to take a new bride.

Arlo Brandt, a hoarder-turned-serial killer, emerges from the Pit with newly found purpose. As Arlo hunts for innocent victims, Bex and the team must get inside a deranged mind.

The student becomes the master when an escaped serial killer from the Pit decides to adopt another inmate's style of killing as a way of paying homage to them.

Haunted by the voice of her mortician father, Colette Akins terrorizes the community where she once lived. Bex and the team discover a strange connection that all of Colette’s targets share.

When Bex and the team race to stop Roy Barber, known as the Couples Killer, before he strikes again, they uncover a chilling scheme that puts Roy's crimes in an entirely new light.