Word count 75

 Joe heard a gunshot followed by pounding on his cabin door.  When he opened the door a disheveled man holding his arm said “Somebody is trying to kill me.  I’ve been shot in the arm.  Let me in.”  A composed Joe said “Don’t worry, you’re safe here.  I can block all the windows and lock the doors.”  The stranger shot Joe “I guess you don’t know me.  You shouldn’t have messed with my wife.”

Appears in Paragraph Planet. Because Paragraph Planet has the unusual 75 word requirement, PP stories may be versions of the more common 50 or 100 word stories. Inspired as two kinds of treachery.