So who was the mystery man on the train? I like to think that it was Spider Shepherd, hero of my thriller series. Shepherd is a former SAS trooper who becomes an undercover cop, works for the Serious and Organised Crime Agency and then moves on to work for MI5. You can read his adventures in Hard Landing, Soft Target, Cold Kill, Hot Blood, Dead Men, Live Fire, Rough Justice, Fair Game, and False Friends.
If you prefer your stories less violent, here’s a free short story for you – Inspector Zhang and the Hotel Guest -