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.
| Actor | Age then | Age now | |
|---|---|---|---|
 | - | - | |
 | 64 | December 14, 1991 (83) | |
| 74 | 127 | |
 | 58 | August 25, 1978 (64) | |
 | 66 | February 23, 1987 (80) | |
| - | - | |
| 58 | August 22, 1990 (76) | |
 | 12 | 65 |