Boy Friend (1939)

A cop pretends to be a crook in order to catch a gang of outlaws. The bad guys run a night club as a front. The cops sister helps him by singing there; otherwise, shes busy making love to a military cadet. Director: James Tinling. Stars: Jane Withers, Arleen Whelan, George Ernest, Richard Bond, Douglas Fowley, Warren Hymer, Robert Kellard, Minor Watson, Robert Shaw, Ted Pearson, William Conselman Jr. , Myra Marsh, Harold Goodwin.