Five years ago, Rosa walked to the pier in the dead of night, looked into the swirling water, and jumped. She was a brilliant young Cambridge student who had just lost her father. Her death was tragic, but not unexpected.<br/><br/>Was that what really happened? The coroner says it was suicide. But Rosa's boyfriend Jar can't let go. He sees Rosa everywhere - a face on the train, a figure on the cliff.<br/><br/>He is obsessed with proving that she is still alive. And then he gets an email. Find me, Jar.<br/><br/>Find me, before they do...