You can't teach an old dog... Strapped into the cockpit of a Tiger Moth trainer, James Herriot has swapped his wellingtons and breeches for sheepskin boots and a baggy flying suit... But the vet-turned-airman is the sort of aircrew trainee to terrify instructors who've faced the Luftwaffe without flinching. Very soon he's grounded, discharged and back to his old life in the dales around Darrowby.