Roper's Niece is the third episode of season one of Three's Company. Directed by Bill Hobin and co-written by George Burditt and Paul Wayne, it first aired 31 March 1977 on ABC.
Summary[]
When Mrs. Roper accuses Mr. Roper of showing his visiting niece Karen a boring time, Roper decides to introduce Karen to Jack. Meanwhile, Jack is involved in organizing a birthday celebration for Janet, so when Roper suggests to Jack that he would like Jack to take his niece out, Jack refuses. He says he couldn't leave Janet on her birthday, and when Roper leaves, he also admits to Janet and Chrissy that he can imagine what any niece of Roper's would look like. But when Roper brings Karen to meet Jack, he is surprised to find she is beautiful. He asks Karen out and tells Janet and Chrissy he'll be back in time for the party. When he isn't, Janet and Chrissy are angry, then realize that they are actually jealous.