James has a terrifying flight to Budapest where he discovers it’s very easy to kill someone on a plane. He manages to evade Toth and Barbara joins him to track down Vera. Vera denies knowing Oliver is alive and threatens to report them for harassment

Everything James thought he knew has been turned upside down and he barely escapes with his life. He returns to London to pursue the killer but Barbara has fired him from his job and no-one believes his stories of what happened in Budapest. When he refuses to drop the case the police arrest him. He finally finds the one piece of evidence which proves the killer’s identity and motive but it may also lead to his destruction.