Overview
John and his class visit the Tower of London, where he loses his pet mouse. He falls asleep during a lesson on electricity, but with some help, he learns about it, invades the Tower, and saves his pet.
Cast & Crew
Director: Michael Powell
Cast: Mark Dightam, Robert Eddison, Helen Weir, Brian Worth, Esmond Knight, Laurence Carter, Patrick McAlinney, Lem Dobbs, Nigel Rathbone
