| Name | Character | Episodes |
|---|---|---|
| Gina Lollobrigida | Princess Alessandra | 2 |
| James Faulkner | Richard Blackwell | 2 |
| Fairuza Balk | Penny Roberts | 2 |
| Stefanie Powers | Sabrina Longworth / Stephanie Roberts | 2 |
| Brenda Vaccaro | Helen Adams | 2 |
| Alison Doody | Waitress | 2 |
| Sam Wanamaker | Jim Nolan | 2 |
| Joan Sims | Mrs. Thirkell | 2 |
| Barry Bostwick | Grant Roberts | 2 |
| Jeremy Brett | Bryan Foxworth | 2 |
| Fabio Testi | Carlo Ferraro | 2 |
| Christopher Rozycki | Dimitri Skolnikoff | 2 |
| John Woodvine | Chief Inspector | 2 |
| Jeremy Miller | Mark Roberts | 2 |