*
This is the first appearance of
chief inspector Teal in the series, although played by Campbell Singer.
Teal would appear again played by Wensley Pithey in Episode #14 "Starring
the Saint" and Norman Pitt in Episode #17 "The Ellusive
Ellshaw" before the producers settled on actor Ivor Dean. Read more on the cast page.
* Campbell Singer would later reappear as Fenton in Episode #94 "The Gadget Lovers"
* Eddie Byrne also appears in Episodes #63 "The Chequered Flag", #80 "The Better Mousetrap" and #118 "The World Beater". He also had a role as General Willard in "Star Wars" (1977)
* Harry Towb also appears in Episode #35 "The High Fence"
* Charles Houston also appears in Episodes #21 "The King of the Beggars", #40 "The Miracle Tea Party", #100 "Invitation to Danger" and #113/114 "Vendetta for the Saint". He also appears in the episode "The Gold Napoleon" of The Persuaders
* John Forbes-Robertson also appears in Episodes #61 "The Crime of the Century" and #72 "The Queen's Ransom"
* There is an unusual amount of exterior scenes with Roger Moore in this episode.
*
Notice how the blood in actor Harry Towb's corner of the mouth changes inside of one minute - from nothing to a clear drop (0:14).
*
Actress Delphi Lawrence seems to confuse the names in this scene - listen as she calls actor Harry Towb by his real name (0:15) [Submitted by Robert Verrall]
*
Listen closely - you can hear a
cough! Noone else is supposed to be in the room though! (0:21)
*
You can see the head of the cameraman (probably) in the reflective window frame (0:26)
*
The shadow of the boom microphone can bee seen in the upper right corner. (0:29)
*
If the car parks this way... 
shouldn't
there be some of the windows behind the car? (0:42)