S8, E2: When Bronwyn gives Gareth a sausage sandwich for his lunch, she has no idea the lengths Nipper the dog will go to for a bite. So when Gareth leaves his lunch dangling in a bag on the train’s brake, Nipper manages to escape and snatch it… letting off the brake in the process and causing The Pontypandy Flyer to head off across the mountains with a carriage full of people and just Nipper in the cab. Luckily Sam is on hand to execute his best Mission: Impossible style rescue and the train is stopped… just in time! Meanwhile, back at the station, Elvis has managed to break Station Officer Steele’s favourite seaside souvenir mug and got himself and Steele glued to a chair whilst trying to fix it…