After a card game Southerner Owen Pentecost finds himself the owner of a Denver hotel. Involved with two women - one who came with the hotel, and one newly arrived from the East to open a dress shop - he then has to make even more fundamental choices when, with the start of the Civil War, he becomes one of a small minority in a strongly Unionist town.

After Confederate officer Blayde Hollister's home and family are destroyed by the Marlowe Brothers during the Civil War, he swears revenge, refusing to surrender and becoming a wanted man. In order to pursue the three brothers into Texas, Hollister fakes his own death in a staged gunfight with his friend Wild Bill Hickock. He then befriends Martin Weatherby, the newly appointed U.S. Marshal to Dallas, an affable, but not very experienced lawman, who agrees to let Hollister assume his identity. The eldest of the Marlowe brothers, Will, masquerades as a law-abiding real estate dealer while feigning righteous indignation over the brutal acts of lawlessness and violence visited on the honest citizens of Dallas by his sociopathic brothers, Cullen and Bryant. (Their parents were evidently fond of the renowned poet William Cullen Bryant). When Hollister becomes a rival for the affections of Weatherby's aristocratic fiancee Tonia Robles, Martin wonders whether he should let Blayde know that ...

Bruno Anthony thinks he has the perfect plot to rid himself of his hated father and when he meets tennis player Guy Haines on a train, he thinks he's found the partner he needs to pull it off. His plan is relatively simple. Two strangers each agree to kill someone the other person wants disposed of. For example, Guy could kill his father and he could get rid of Guy's wife Miriam, freeing him to marry Anne Morton, the beautiful daughter of a U.S. Senator. Guy dismisses it all out of hand but but Bruno goes ahead with his half of the 'bargain' and disposes of Miriam. When Guy balks, Bruno makes it quite clear that he will plant evidence to implicate Guy in her murder if he doesn't get rid of his father. Guy had also made some unfortunate statements about Miriam after she had refused him a divorce. It all leads the police to believe Guy is responsible for the murder, forcing him to deal with Bruno's mad ravings.