Ethel Ruby Keeler was an American actress, dancer, and singer who was paired on-screen with Dick Powell in a string of successful early musicals at Warner Bros., particularly 42nd Street (1933). From 1928 to 1940, she was married to actor and singer Al Jolson. She retired from show business in the 1940s, but made a widely publicized comeback on Broadway in 1971.

Richard Ewing Powell was an American actor, singer, musician, producer, director, and studio head. Though he came to stardom as a musical comedy performer, he showed versatility and successfully transformed into a hardboiled leading man, starring in projects of a more dramatic nature. He was the first actor to portray private detective Philip Marlowe on screen.