When four men receive letters predicting their deaths, Cheyenne is the only one who recognizes the danger they bring. Pretty Penelope Piper arrives on the stage and the deaths start - each with her involved but the men trust her.
Mysterious letters are received by leading citizens of the town of Calista from Omaha. Each letter indicates the recipient will die starting with the sheriff. Cheyenne is the only one who analyzes the meaning of the letters and takes them seriously. Who is sending them or why is a question for the four involved and the new deputy, Cheyenne. They decide to meet the stage from Omaha to see who arrives. Two men and the pretty Penelope Piper (Penny) arrive. One man says he is a peddler while the other is a gambler. Penny says she is a widow from Boston who has never been west. After she arrives, what's in the letters starts to come true starting with the sheriff! He is apparently shot by accident with his own gun by Penny who is holding it to look at the notches carved on it. A second man dies when his horse goes over a cliff with a second man and Penny involved. Cheyenne believes she is the cause but no one else believes him. When the third man apparently dies at the hand of the fourth ... Written by