Her Sister's Secret is a 1946 American drama film directed by Edgar G. Ulmer and starring Nancy Coleman, Margaret Lindsay, Phillip Reed, and Regis Toomey.

They have breakfast there the following day, and Dick proposes to Toni, who decides to wait until six weeks have passed before meeting again to see if they truly love each other.

Directed by Edgar G. Ulmer, Her Sister's Secret was produced by Henry Brash and written by Anne Green.

They increased their usual film budget for Her Sister's Secret, referring to it as their "first million-dollar production" in advertising.

"[5] Richard Brody of The New Yorker remarked that "the actors are hardly charismatic, but Ulmer, capturing their frozen energy in the shifting perspective of daringly long takes, infuses them with his rhapsodically compassionate vision."

Brody also wrote that "Edgar G. Ulmer cuts loose with a wild creativity that yoked his theatrical imagination to a keen view of the traumatic times," and that Ulmer "wrings the last drop of true emotion from every soap-operatic twist, while also baring the domestic scars of war’s violence, sacrifice, and, above all, silence.

"[7] In 1947, the film was banned in Ireland by Richard Hayes for featuring an unwed mother, a decision which was eventually reversed by the Appeal Board.

[8] This reversal was described by Irish film historian Kevin Rockett as "an indication of the slightly more flexible approached being adopted in the post-war years by the Appeal Board.