A Foreign Affair [1948]

A congressional committee visits occupied Berlin to investigate G.I. morals. Congresswoman Phoebe Frost, appalled at widespread evidence of human frailty, hears rumors that cafe singer Erika, former mistress of a wanted war criminal, is "protected" by an American officer, and enlists Captain John Pringle to help her find him...not knowing that Pringle is Erika's lover.