Max sets out to find the missing Ryan, but Eliza's mole in the FBI has other ideas. Meanwhile, Theo plans to exact vengeance on Ryan for Penny's death, but things don't go according to his plan.
Ryan puts the pressure on Theo by holding a press conference, and the killer retaliates by going after someone close to Ryan looking for bait for a trap. Meanwhile, Gwen and Ryan starts to reconcile, and Mike hangs onto life by a thread.
Theo tries to trade Mike for Penny, and Ryan is forced to turn to Max for assistance. Meanwhile, Daisy and Mark have a parting of the ways, and Lisa is called in to assist in the investigation.
While Ryan and Max continue the search for Theo and the missing Erin, Mark and Daisy make a deal with Theo to get Mike.
While the FBI seeks out a new serial killer with ties to Theo, Theo and Penny look for the person who can restore their anonymity. Meanwhile, Ryan continues to descend into insanity as visions of Joe haunt him.
Joe manages to take three hostages and demands that Ryan visit him before his hostage. Meanwhile, Theo recruits an ally and attempts to solve Strauss' encryption.
Theo convinces a man that he is the chosen one so that he can get in contact with Joe. Meanwhile, Mark tracks Daisy down, while Mike and Max try to track down the missing laptop from Mark's safe house.
While Ryan and his team close in on Theo, the killer finds his family life at risk due to a nosy neighbor. Meanwhile, Gina considers retirement and Gwen realizes that Ryan is losing it.
As Joe's execution nears, Ryan and Mike face a new threat, while Max is cleared to rejoin the task force and immediately finds herself in harm's way.
While Mike and Ryan track Strauss to a small town and a dark secret, Max considers confessing to Gwen... unaware that Tom is still secretly monitoring her.
The case against Strauss begins to unravel in court, and Ryan has to locate a key witness--and old flame--before it's too late. Meanwhile, Mark tracks down the woman pulling Kyle and Daisy's strings.
Mark, Kyle, and Daisy pick four new targets and then go after a fifth. However, Ryan and the others realize who their true target is.
Ryan, Mike, and Max hunt down Neil, while Mark abducts two reporters so that they can tell his side of the story.
Ryan tries to determine the connection between Joe and Mark. However, he soon finds himself in a dangerous situatoin and is forced to face the truth... or die Meanwhile, tensions within the group continue growing.
Ryan tries to move on with his life now that Joe is awaiting execution for his crimes. However, a new series of grisly murders drags him back in and Ryan realizes that Joe's murder spree was only the beginning.