The biggest clue that I had time-travelled was that Mark Williams (better known as Arthur Weasley in the Harry Potter movies) looked so young. He must have only been in his mid to late twenties.

As the manager of Worcester railway station, he was helping the police with murder enquiries. They had discovered a second body on the tracks within a short two week period, and now it was feared that a train-spotting serial killer was on the loose.