Générique complet
Le Mystère des sept cadrans
John Gielgud
Marquis of Caterhan
Cheryl Campbell
Lady Eileen 'Bundle' Brent
Rula Lenska
Countess Radzsky
Lynne Ross
Nancy
James Warwick
Jimmy Thesiger
Harry Andrews
Superintendent Battle
Joyce Redman
Lady Coote
Lucy Gutteridge
Lorraine Wade
Terence Alexander
George Lomax
Brian Wilde
Tredwell
Sarah Crowden
Helen
Leslie Sands
Sir Oswald Coote
CS
Christopher Scoular
Bill Eversleigh
JG
James Griffiths
Rupert 'Pongo' Bateman
HB
Hetty Baynes
Vera
Robert Longden
Gerry Wade
John Vine
Ronny Devereux
