Jury foreman Edward Weldon's questioning leads to the death sentence for Ethel Saxon. His daughter Stella claims to have killed her lover, the gangster Garboni, just as Saxon was to sit in the electric chair.

Although several others are ahead of him in the line of succession, Richard of Gloucester is determined to gain the throne. Through deceit, manipulation, and murder, he does become King Richard III of England. But once he becomes king, he soon finds out that the many enemies he has made will make it very difficult for him to remain on the throne for long.