A Healey KX20 mini-computer has been stolen by Dreisenberg agents and is believed to be in the hands of the Dreisenberg Ambassador, who plans to leave the country with the device. Father Unwin leaves immediately for Heathrow to plant a miniaturised Matthew aboard the Ambassador's private jet.
| Name | Type | Role | |
|---|---|---|---|
| Gerry Anderson | Writer | ||
| Sylvia Anderson | Writer | ||
| Alan Perry | Director |