Frank Pierson Director Christopher Jones Leiser Actor Pia Degermark The Girl Actor Ralph Richardson LeClerc Actor Anthony Hopkins John Avery Actor Paul Rogers Haldane Actor Susan George Susan Actor Anna Massey Avery's Wife Actor Ray McAnally Undersecretary of State Actor Vivien Pickles Mrs. King Actor John le Carré Writer John Box Producer M.J. Frankovich Executive Producer William Kirby Associate Producer