Ash is still trying to come to terms with the idea that his brother, Luke, may not be dead. Kat tells him that, without a death certificate, he must still be alive, despite the funeral. Later, Ash gets a call from an unknown number but, when he answers, no one is there.

Back at the station, Kat looks through the details of Luke’s death. As she stumbles across a picture of Luke, she realises she saw him at Billie’s funeral! When Kat tells Ash, he’s floored by Kat’s claim. Determined to prove that Luke is still alive, Kat traces Ash’s mystery caller to see if it leads to Luke. Will Kat’s hunch reunite Ash with his brother?