Mitchell and Daisy, the sole survivors of the explosion, try to get to the bottom of who was responsible. When Mitchell discovers that Lucy was behind it, he goes berserk and vows retaliation, killing Quinn the coroner and, with Daisy massacring passengers in a train carriage (the "Box Tunnel 20"). Nina returns, and offers George a chance at a cure. George initially refuses, but changes his tune when a confusion of time causes him to begin his transformation in public, frightening Molly in the process. Annie also seeks the help of Kemp to cross over, but his methods prove to be quite time-consuming if not utterly pointless.