Five years ago, Rosa walked to Cromer pier in the dead of night. She looked into the dark swirling water below, and she jumped. She was a brilliant young Cambridge student who had just lost her father. Her death was tragic, but not unexpected.

Was that what really happened? The coroner says it was. But Rosa’s boyfriend Jar can’t let go. He hallucinates, seeing Rosa everywhere – a face on the train, a distant figure on the hillside. He is obsessed with proving that she is still alive. And then he gets an email.

Find me, Jar. Find me, before they do…