The Grimmer family have always hung on to the idea that somehow Cheryl might still be alive. Then, out of the blue, Ricki gets a call from the police which seems to put an end to their hopes. BBC News Correspondent Jon Kay continues his investigation into the disappearance of 3 year old Cheryl Grimmer from an Australian beach in 1970. He meets one of the two detectives involved in a cold case review. There's someone the police want to talk to. Produced for BBC Audio in Bristol by Chris Ledgard Music: Elizabeth Purnell Studio engineer: Jacques Sweeney Editor: James Cook