Inspector Jarvis promotes Oliver to Acting Staff Sergeant with Frank's dismissal. Duncan Moore is the new addition to 15 Division and Andy, feeling she's up to the challenge, asks to be his Training Officer. When their first case is a messy homicide at a pawnshop, Andy has to show Duncan how to handle a crime scene and not compromise the case. Sam's sister, Sarah, is ready to head out but gives Andy some instructive words on what to expect in the long run with Sam.moreless
The team gets news that will affect their future - and that of the Warehouse - forever.
Crowley and a reluctant Dean go on a road trip to find The First Blade, the only weapon that kill their mutual enemy, Abaddon. Meanwhile, Castiel proposes to use Gadreel's remaining grace in Sam to track the angel, but warns that it could cause Sam permanent damage.moreless
While Olivia and Lincoln try to return Peter home, they try to cope with the looming threat of the transparent shapeshifters. Meanwhile, a traitor is revealed and an old enemy emerges from the shadows.moreless
The Fringe team visits a widow who is connected to a mysterious event. Meanwhile, Peter and Olivia try to resolve the issues between them.