LOCATION: Aboard Astair flight Golf-Alpha-Zulu-Echo-Bravo DATE: July 17th An airplane lands at Heathrow 30 minutes early, according to all indications on board. When the plane lands the crew is met by anxious airport officials, notifying them that they are not 30 minutes early, but six days overdue. Department S has a vested interest in the flight, because Sir Curtis was aboard. As they begin investigating, people start dying.
| Name | Type | Role | |
|---|---|---|---|
| Gerald Kelsy | Writer | ||
| Bernard Horsfall | Guest Star | Captain Carter | |
| Tony Steedman | Guest Star | Hallet | |
| Peter Bowles | Guest Star | Borowitsch | |
| Cyril Frankel | Director | ||
| Joel Fabiani | Actor | Stewart Sullivan | |
| John Gabriel | Actor | Air Traffic Controller | |
| Rosemary Nicols | Actor | Annabelle Hurst | |
| Marion Mathie | Actor | Lady Hallet | |
| Dennis Alaba Peters | Actor | Curtis Seretse | |
| Al Mancini | Actor | Durres | |
| Peter Bromilow | Actor | Walsham | |
| Geoffrey Chater | Actor | Peck | |
| Peter Wyngarde | Actor | Jason King | |
| Geraldine Moffat | Actor | Janet | |
| Charles Houston | Actor | Stevens |