An unusually elaborate film from the bargain-basement PRC studios, Her Sister's Secret is set in New Orleans at Mardi Gras time. The "secret" involves an illegitimate child. Nancy Coleman is impregnated by a soldier on leave, and when she fears that he'll never return, she persuades her married sister (Margaret Lindsay) to raise the child. The better-than-usual cast includes Phillip Reed as the soldier, along with Regis Toomey, Felix Bressart and Henry Stephenson. Her Sister's Secret was the sort of B-plus fare that PRC would specialize in when it reorganized in 1947 and changed its name to Eagle-Lion.