Overview: Series 5 sees the return of Jon Morrison (High Times, Nil By Mouth) as D.C. Kenny Lockhart, Cush Jumbo (Torchwood: Children of Earth) as D.C. Bethany Whelan, Kingsley Ben-Adir (City Slacker) as pathologist, Dr. Marcus Summer and Riley Jones as D.C. Mark Edwards. Joe Ashworth (David Leon) finally got his long awaited promotion - Celine was delighted!