The Paradox crew need a break so they visit a Galactic Theme Park on the planet Themea, apparently run by Twaddle Duff. The crew decide to take a ride on the ghost train. However, they are unaware that this is a trap by Dr. Agon (disguised as Twaddle Duff) who plans to give them the ride of their lives!
| Name | Type | Role | |
|---|---|---|---|
| Gerry Anderson | Writer |