An auburn-haired supporting actress of the 1920s, Rosemary Cooper had spent a couple of years with various stock companies prior to making her screen debut in 1923. Very busy toward the end of the decade, Cooper played the Queen in a 1927 screen version of Clyde Fitch's The Climbers and was the cabaret dancer whose stolen necklace propelled the plot in The Return of Boston Blackie (1927). She left films at the advent of sound. ~ Hans J. Wollstein, Rovi