ITV3 +1 (Freeview) Monday

A body is dredged up from the English Channel, and the investigation forces Grace to ask himself just how far someone might go to save the ones they love

Part one of two. The detective and sidekick Annie Cabbot investigate the deaths of two people on a canal boat that was destroyed in a fire. Crime drama, starring Stephen Tompkinson

Part two of two. The detective realises he is now on the trail of a serial killer, but a new discovery casts doubt on the alibis of all his suspects. Stephen Tompkinson stars