Tale of the Big Y. When a mysterious book revealing the identity of a masterspy goes missing, the New Avengers must track it down.
John Steed PATRICK MACNEE, Mike Gambit
GARETH HUNT , Purdey JOANNA LUMLEY.
Harmer DEREK WARING , Irene JENNY RUNACRE ,
Brandon GEORGE COOPER. Turner ROY MARSDEN
Director Robert Fuest
First shown on ITV