But I’ll answer any question you wish me to answer as truthfully as I can. Well, I feel you got the last drop out of the sponge on that subject. Errol Morris’s documentary The Pigeon Tunnel concentrates on Cornwell/Le Carré’s relationship with his conman father and on his career.Īt one particularly telling juncture late in the film, Morris asks Cornwell about the theme of “betrayal” that runs through his life and career.