Note on the back of this picture:

BRITAIN'S MOST UNUSUAL UNDERCOVER AGENT

Cathy Gale, the glamorous blonde secret agent of ABC's TV thriller series "THE AVENGERS", is certainly Britain's most attractive and original undercover girl. HONOR BLACKMAN, whose elegant clothes and proficiency with guns and judo have made her so popular with ITV audiences, returns on September 28th with her partner John Steed (PATRICK MACNEE) for a new 26-week season of "THE AVENGERS".