Most of the picture’s impact, however, is the contribution of Susan Hayward, giving the performance of her career as the doomed but indomitable Barbara.

The movie works as a showcase for Hayward, who’s superb in the part.

It is strong factual drama, thoughtfully presented, with a harrowing climax that is little short of nerve-shattering.

Susan Hayward gives one of her stagey but jolting performances...