Season premiere. In the aftermath of the night’s traumatic events, Andy and Dov try to pull themselves together at an all-night diner. Meanwhile, the weary officers at 15 Division deal with a tough new Inspector.
Season finale. Following violent, targeted attacks on 15 Division, officers must piece together a past crime in order to find Oliver; the shooter's plan is revealed.
Strange assaults and several deaths may be related to a Doors/Taelon joint venture where Taelon core energy was used to heal people. It appears that the energy is being sucked back out of the patients.
Peter Farragut, Sarah Jordan and Dr. Kyle Sommer go to a mysterious island to investigate an unknown pathogen that killed everyone, except Leila, aboard the Mist of Avalon.
Peter and Jordan leave the safety of the Abbey to retrieve some specimens and discover just what’s living in the woods; meanwhile Sister Amy plots to make them leave forever.