In Milan, the travellers meet Puccini and an alien who sets riddles for humanity.
| Name | Type | Role | |
|---|---|---|---|
| Richard Reed | Guest Star | Massimo / Karl | |
| Tim McInnerny | Guest Star | Giacomo Puccini | |
| Sarah Lawrie | Guest Star | Elvira Bonturi | |
| Tania Rodrigues | Guest Star | Princess Tura |