11 Harrowhouse

11 Harrowhouse is a 1974 British film directed by Aram Avakian. It was adapted by Charles Grodin based upon the novel by Gerald A. Browne with the screenplay by Jeffrey Bloom. It stars Charles Grodin, Candice Bergen, James Mason, Trevor Howard and John Gielgud.

Time Magazine reviewed the film positively, and described the cast as poised and stylish.citation needed A prominent theme of the film revolves around how the primary world diamond producer controls the price of diamonds by creating artificial scarcity, much as oil producers do today. ........

Source: Wikipedia