Jean-Paul Belmondo plays Paul, a former womanizer who marries the head of the medical department's "unattractive" daughter Christine because he thinks attractive women can't be trusted and make poor wives. A car accident leaves him bedridden and he begins to miss his playboy days, when Christine's bombshell sister Martine arrives and Paul decides he must have her. He begins drugging Christine at night so he can sneak out to kill of Martine's many suitors one by one.

Lucas Marsh, an intern bent upon becoming a first-class doctor, not merely a successful one. He courts and marries the warm-hearted Kristina, not out of love but because she is highly knowledgeable in the skills of the operating room and because she has frugally put aside her savings through the years. She will be, as he shrewdly knows, a supportive wife in every way. She helps make him the success he wants to be and cheerfully moves with him to the small town in which he starts his practice. But as much as he tries to be a good husband to the undemanding Kristina, Marsh easily falls into the arms of a local siren and the patience of the long-sorrowing Kristina wears thin.

Dora, a young woman at the center of an unusual murder trial, is subjected to a psychiatric evaluation, and as the tests become more personal — and frightening — she begins to question the true motives of her doctor and is forced to live through the recreations of her past.