<p>Frank has left the police but can't let go of Cheryl's story.
Jon Kay continues to investigate what happened to 3 year old Cheryl Grimmer, who vanished from a beach New South Wales, Australia more than 50 years ago.</p><p>Produced for BBC Audio in Bristol by Chris Ledgard
Music: Elizabeth Purnell
Studio engineer: Jacques Sweeney
Editor: James Cook</p>
