Flood's Folly Maverick : Season 4 Episode 23

Outside Denver, Colorado, Beau and his friend, Judge Scott, find shelter during a blizzard at the home of Martha Flood and her niece Sally. Martha and the judge are plotting to institutionalize Sally in order to take over her inheritance. However, Martha's lover, a professional killer named Chet Whitehead plans to kill Sally, the judge, and Maverick.