Return from the Ashes (1965)

Synopsis
Ingrid Thulin plays a Polish inmate of the Dachau concentration camp who is liberated at the end of the war. Presumed dead, Ingrid returns to visit her husband (Maximillian Schell) She finds that his grief was fleeting at best; his new mistress is his "deceased" wife's daughter (Samantha Eggar) from a previous marriage. Since Ingrid's identity is masked by plastic surgery, she subtly re-enters their life without undue stress for either husband or daughter. But when the husband figures out the ruse, he murders his young paramour in the bathtub (a moment lavishly exploited in the print ads for this film) and plots to kill Ingrid for her money. A textbook case of implausibility, Return from the Ashes was adapted from an equally unbelievable novel by Hubert Monteilhet. ~ Hal Erickson, All Movie Guide