When Evan's car is found abandoned at the docks, Faith is dragged to the police station for an interrogation. When Steve attempts to help, he too finds himself caught in the firing line of the law. Meanwhile, an increasingly conflicted Tom uncovers terrible secrets about his son, Bethan's erratic behaviour puts a strain on her marriage to Terry, Faith prepares to do a secret deal with Dr Alpay, and DI Williams resorts to desperate tactics to break Faith.