11 Harrowhouse (20th Century Fox, 1974)
In England, a small-time diamond merchant (Charles Grodin) is unexpectedly offered the chance to supervise the purchase and cutting of an extremely large diamond to be named for its wealthy owner (Trevor Howard). When the diamond is stolen, the merchant is blackmailed into pulling off a major heist at “The System,” located at 11 Harrowhouse, with the help of his wealthy girlfriend (Candice Bergen). The inside man (James Mason) works in the vault at The System. He is dying of cancer and wants to leave his family financially secure.
11 Harrowhouse was directed by Aram Avakian. It was adapted by Grodin from Gerald A. Browne’s novel with a screenplay written by Jeffrey Bloom.