Simon Templar is hired by a friend in the book publishing trade to protect one of his stars, a secretive recluse named Amos Klein who writes a popular (and lucrative) series of adventure novels about a manly and suave spy.
| Actor | Role |
|---|---|
 Roger MooreSimon Templar | Simon Templar |
 Caron GardnerCarol Henley | Carol Henley |
 Sylvia SymsJoyce Darling | Joyce Darling |
| JJustine LordGalaxy Rose | Galaxy Rose |
 Kenneth J. WarrenWarlock | Warlock |
 Philip LockeFrug | Frug |
 Tom CleggMonk | Monk |
 Nicholas SmithBishop | Bishop |
| RRoy HanlonNero Jones | Nero Jones |
| PPeter AshmoreFinlay-Hugoson | Finlay-Hugoson |
| FFrank MaherRip Savage | Rip Savage |
| GGraham ArmitageCarson | Carson |
 Lila KayeMa | Ma |
| AAnthony BlackshawMorgan | Morgan |
 Roy BoydMcCord | McCord |
| VVincent Harding1st Guard | 1st Guard |
 Richard Franklin2nd Guard | 2nd Guard |
| RRalph BallPhotographer | Photographer |
| JJoe GibbonsPa | Pa |
| SShaun CurryGuard, Gamekeeper | Guard, Gamekeeper |
| OOswald LaurenceReporter | Reporter |
| DDavid RendallReporter | Reporter |
 Richard DaviesReporter | Reporter |
| IIan KinglyReporter | Reporter |