The Boy Who Turned Yellow Director: Michael Powell Share: Synopsis 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. Video & Photo 1 photos Seen this film? Tell us about it Cancel replyYour email address will not be published. Required fields are marked *Comment *Name * Email * Website Save my name, email, and website in this browser for the next time I comment.