The Two Mr. Thorsons: Part 1 - S1.E10

A former bail jumper calls Dottie with the news that there's a woman in Las Vegas who is claiming to be the legal wife of Ralph Thorson, married to him at the same time Dottie was. When the Thorsons travel to Las Vegas to confront the woman, she is adamant in her claims and sounds like she has a credible story. Dottie, Though she doesn't believe her, Dottie is still forced to consider that Ralph may have led a double life. But before she can speak to the second Mrs. Thorson again, the woman turns up dead and Dottie is charged with her murder.