The TARDIS arrives on the coast of seventeenth century Cornwall — much to the astonishment of Polly and Ben. Pirates led by Captain Samuel Pike and his henchman Cherub are searching for a hidden treasure, while a smuggling ring masterminded by the local squire is trying to off-load contraband.
| Actor | Role |
|---|---|
 William HartnellThe Doctor | The Doctor |
 Anneke WillsPolly | Polly |
 Michael CrazeBen Jackson | Ben Jackson |
| DDavid Blake KellyJacob Kewper | Jacob Kewper |
 Terence de MarneyJoseph Longfoot | Joseph Longfoot |
 George A. CooperCherub | Cherub |
| JJohn RinghamJosiah Blake | Josiah Blake |
| MMichael GodfreyCaptain Pike | Captain Pike |
| EElroy JosephsJamaica | Jamaica |