Bellamy and Maggie search for answers and look for any connection between Caleb and Jacob's deaths and subsequent returns. Caleb's strange behavior only adds to the mystery and Pastor Tom gets the shock of a lifetime.moreless
As Jacob's remains are exhumed to help determine his real identity, another formerly deceased person returns to Arcadia alive and seemingly unaware that he had died.
The BAU investigates when two female murder victims are found in the Pittsburgh area wrapped in shower curtains. The team soon discover they should be looking for a pair of UnSubs who are working together.moreless
Barbie receives word from the outside that the government is drawing their men back as the Dome interferes with magnetic fields.
When Chester's Mill is stricken by a meningitis outbreak, the townspeople panic when the clinic runs out of medicine and the Dome prevents anyone from bringing in new vaccine. Meanwhile, Julia learns the secret that Peter was hiding from her, and Junior is left in charge.moreless
Joe ends up holding a party at his home where the town's teenagers gather to enjoy one of the few generators in town after the power goes out. Meanwhile, Barbie and Big Jim search for Paul after he escapes custody, and Junior looks for a way out of Chester's Mill.moreless
As the reality of their situation settles in, the townspeople's tempers start to fray. Meanwhile, Big Jim sends Reverend Coggins to remove the evidence from Duke's house, and Junior stalks Barbie.
Boyd discovers that Colt has been lying about Ellen May and the identity of Drew Thompson is revealed.
No one is safe as bodies start to drop in the hunt for Drew Thompson.
Jody Adair escapes custody, leaving Raylan compelled to track him down. Boyd and Ava work their way into a high society party to fish out Drew Thompson, but find far more than they expected.moreless
Castle and Beckett investigate the murder of a lottery winner, leaving them with plenty of suspects to look into. Meanwhile, Martha inherits money she feels she doesn't deserve.