* Annette André also appears in Episodes #45 "The Saint Steps In", #46 "The Loving Brothers", #90 "To Kill A Saint" and #107 "The House on Dragon's Rock"
* Robert Cawdron also appears in Episodes #4 "The Covetous Headsman", #19 "The Work of Art", #42 "Jeaninne" and #90 "To Kill A Saint" (all: same role)
* The character of Inspector Quercy appears several times in the series although played almost every time by a different actor. It's Eugene Deckers in Episode #4 "The Covetous Headsman", Manning Wilson in #19 "The Work of Art" and #42 "Jeannine" and John Serret in # 64 "The Abductors" and #90 "To Kill A Saint"
* John Serret also appears in Episodes #15 "Judith", #72 "The Queen's Ransom" and #90 "To Kill A Saint"
*
* Nicholas Courtney also appears in Episode
#53 "The Contract", although uncredited there. [Submitted by Wojciech Trojanowski]
* Ronald Ibbs also appears in Episodes #32 "The Lawless Lady" and #56 "The Inescapable Word"
* Sandor Elés also appears in Episodes #74 "The Russian Prisoner" and #112 "Where the Money Is"
* David Garfield also appears in Episode #107 "The House on Dragon's Rock"
* Martin Wyldeck also appears in Episodes #29 "The Noble Sportsman", #78 "The Angel's Eye" and #104 "The Double Take"
*
When Jones shoots at the French
policeman in the telephone cell it's only powder that comes out of the
gun. (0:27)
*
Why doesn't Professor Quell inquire
why the fake policeman doesn't check Jones? (0:28)
*
Once again... it's the bad
guys' Mercedes!
*
Amazing: Seargent Leduc is parking
at exactly the same spot as he did earlier that day... ;-)