Shirley is the orphaned survivor of an Indian attack in the Canadian West. A Mountie and his girlfriend take her in. Everybody suffers further Indian attacks and the Mountie is saved from the stake only by Shirley's intervention with the Indian chief.
In a dilapidated rural mansion, the last generation of the degenerate, inbred Merrye family lives with the inherited curse of a disease that causes them to mentally regress from the age of 10 or so on as they physically develop. The family chauffeur looks out for them and covers up their indiscretions. Trouble comes when greedy distant relatives and their lawyer arrive to dispossess the family of its home.
Plot centers around how a young recruit (Audie Murphy) faces the horrors of war. Character vacillates between wanting to fight and doubting his own courage. In midst of first bloody encounter, Youth runs away. After seeing dead and wounded, sense of shame leads him back to his unit, where he distinguishes himself in the next battle. Having overcome his fear of "the great Death" he knows e can face whatever comes.
At overcrowded Westgate Penitentiary, where violence and fear are the norm and the warden has less power than guards and leading prisoners, the least contented prisoner is tough, single-minded Joe Collins. Most of all, Joe hates chief guard Captain Munsey, a petty dictator who glories in absolute power. After one infraction too many, Joe and his cell-mates are put on the dreaded drain pipe detail; prompting an escape scheme that has every chance of turning into a bloodbath.