The Baron and Cordelia are in Switzerland when they bump into Peter Franklin, an old friend of Cordelia. Franklin, who is a CIA agent, has stolen the latest strain in a deadly virus from the laboratory he was working in. When Franklin is killed, Mannering is in a race with Sorenson, the scientist who developed the virus, and Holmes, an unscrupulous character, to discover the whereabouts of the deadly bacteria.
| Name | Type | Role | |
|---|---|---|---|
| Terry Nation | Writer | ||
| Dennis Spooner | Writer | ||
| Cyril Frankel | Director |