After reading some moderately positive reviews here I approached watching Istanbul with some optimism. I remembered fondly Errol Flynn's late-career turn as "Mike Campbell" in the film version of Hemingway's "The Sun Also Rises". Although too old for the part, he put in a fantastic performance and was the only actor in that film who truly "got" his character from that great novel. Sadly here he is listless throughout whether fighting or romancing or anything. Cornell Borchers plays the love interest done up as Ingrid Bergman but with little of the charisma. As an aside Peggy Knudsen ("Mona Mars" from "The Big Sleep") plays the distaff side of a crass American tourist couple. The roles are played in the manner of Ralph and Alice from "The Honeymooners" and it jars greatly to a modern taste showing yet again that the past is a foreign country. The plot involving lost love and diamond smuggling is ho-hum and the overall entertainment value is passable only.