The TARDIS crew take up residence near Rome in 64AD, where Ian and Barbara are kidnapped by slave traders, and the Doctor's imitation of Maximus Pettulian sees him taken to the court of Emperor Nero where he inadvertently plays a part in deciding the course of history...
| Actor | Role |
|---|---|
 William HartnellThe Doctor | The Doctor |
 Jacqueline HillBarbara Wright | Barbara Wright |
 William RussellIan Chesterton | Ian Chesterton |
 Maureen O'BrienVicki | Vicki |
| DDerek SydneySevcheria | Sevcheria |
| NNicholas EvansDidius | Didius |
| DDennis EdwardsCenturion | Centurion |
| EEdward KelseySlave Buyer | Slave Buyer |
| BBart AllisonMaximus Pettulian | Maximus Pettulian |
 Barry JacksonAscaris | Ascaris |
 Peter DiamondDelos | Delos |
 Michael PeakeTavius | Tavius |
| DDorothy-Rose GribbleWoman Slave | Woman Slave |
 Gertan KlauberGalley Master | Galley Master |
| EErnest JenningsMan in Market | Man in Market |
| JJohn CaesarMan in Market | Man in Market |
| TTony LambdenCourt Messenger | Court Messenger |
 Derek FrancisNero | Nero |
| BBrian ProudfootTigellinus | Tigellinus |
| KKay PatrickPoppaea Sabina | Poppaea Sabina |
| AAnne TirardLocusta | Locusta |
| MMargot ThomasStall Holder | Stall Holder |