Thurston must get word to a Czech underground leader that his cover has been blown and, if he goes ahead with an important operation, his entire spy network will be captured. When the agent entrusted to warn the underground is discovered to be a double-agent, Thurston must impersonate the man to cross the border and spread the word.
| Name | Type | Role | |
|---|---|---|---|
| Karl Ludwig Lindt | Guest Star | (as Karl Lindt) |