- Awesome, Dear Boy: Roger Moore was a fan of the books and was excited to play Simon Templar. Prior to this show, he'd even tried to buy the rights to the stories himself so he could produce his own version.
- Big Name Fan: Roger Moore recalled that Mia Farrow once told him that she and Frank Sinatra were big fans of the series.
- California Doubling: In order to save on productions costs, British locations were substituted for some of the exotic locations.
- Even though the Two-Part Episode "Vendetta for the Saint" was set in Italy, production on location took place in Malta.
- Directed by Cast Member: Roger Moore did several episodes (and as pretty much the only regular cast member, he's the only candidate here).
- Disowned Adaptation: To hit the hour-long runtime, some of Charteris's stories would have extra plot or Padding (all the black-and-white episodes are based on short stories, novellas or even novels; the colour episodes featured more original scripts, but some were still based on published works). Harry Junkin, the script editor, would find that Charteris had left notes on the scripts saying "Fit for junkin".
- Despite this, however, Charteris would later oversee the novelisations of several TV episodes, which would be written by staff writers but published (initially) under Charteris' name.
- Fake American: In a very early episode, Simon Templar has to rescue a kidnapped American girl in Rome. Said girl, played by English actress Sally Bazely, is the definition of Not Even Bothering with the Accent.
- Fake Nationality: Julie Christie guest-starred in "Judith" as a Canadian woman.
- Missing Episode: The 47 colour episodes show up much more often in syndication (on British TV, anyway) than the 71 black-and-white ones. (However, the entire series is on DVD.)
- Old Shame: Peter Wyngarde was embarrassed about his guest role in "The Gadic Collection" as villainous Turk in Blackface. He was against the idea, but relented, as he hoped it would lead to him playing Othello.
- The Other Darrin: Chief Inspector Teal, the only character from the Charteris works other than guess who to appear on a recurring basis, was recast three times before settling on Ivor Dean to play the role.
- Recursive Adaptation: Many comic strip arcs and TV episodes received prose adaptations by Leslie Charteris and other writers. These adaptations fit into the Saint's literary continuity. Examples include "The Saint in Trouble" (has a footnote to the events of "The Last Hero") and "Salvage for the Saint".
- Role-Ending Misdemeanor: Actor and stand-up comedian Mike Reid (best known as Frank Butcher in Eastenders) was fired from his role as Roger Moore's underwater stunt double after making fun of the actor's thinning hair.
- Scully Box: Roger Moore wore lifts and a hairpiece to play Simon Templar.
- Star-Making Role: For Roger Moore.
- What Could Have Been: Leslie Charteris originally wanted David Niven to star as Simon Templar.
Trivia / The Saint