If it had happened to you, you would have run away too.

Twenty-five years ago, Paul's friend Charlie Crabtree brutally killed their classmate - and then vanished without a trace.

Paul's never forgiven himself for his part in what happened. He's never gone back home.

Until his elderly mother has a fall. It's finally time to stop running.

It's not long before things start to go wrong. His mother claims there's someone in the house. Paul realises someone is following him. And, in a town many miles away, a copycat killer has struck.

Which makes him wonder - what really happened to Charlie the day of the murder?

And can anyone stop it happening again?