Here's Lucy (1968)

S4E17 Lucy and the Little Old Lady

An elderly woman arrives at the employment agency seeking work, as she has nowhere else to turn. Moved by her situation, Lucy offers her a place to stay at her home. Meanwhile, when Mrs. Brady sells property to Harry, Kim warns them of a scam that sounds similar, sparking an idea in Lucy and Harry. They decide to stage a séance with costumes as Napoleon and Josephine, hoping to persuade Mrs. Brady to return Harry's money.