It started with a splash. Jimmy, a homeless veteran grappling with PTSD, did his best to pretend he hadn't heard it -- the sound of something heavy falling into the Tyne at the height of an argument between two men. Not his fight. Then he sees the headline: But telling the girl, Carrie, what he heard -- or thought he heard -- turns out to be just the beginning of the story. The police don't believe him, but Carrie is adamant that something awful has happened to her dad and Jimmy agrees to help her, putting himself at risk from enemies old and new.