1. Episode 1

John Sergeant narrates a selection of first-hand accounts of nightmare trips on the railway, including passengers stuck on a train that lost power on the hottest day of the year, leaving them without air conditioning in the 38C heat. Plus, the driver whose quick reactions helped save the lives of his passengers when his high-speed train hit a lorry on a level crossing, and the pandemonium underground when a London Tube carriage filled with smoke.