Frasier and Niles are sat chatting. Daphne: I found a ring in your father's underwear drawer. Niles: An engagement ring? Niles: But... what do we even call her? Niles and Frasier are sat on the sofa as Sherry and Martin prepare for their party. Sherry: You know, that is so weird. Martin: Sounds like somebody's checking up on ya'. Private investigators never leave a trail. Martin: [whispering furiously] Which one of you hired him?! Niles: Is it? Niles: [writes check] I appreciate all your hard work and I am sorry to have to break off the investigation in the middle. The detective leaves. Frasier: You know, Dad, I was talking with a lady today down at the café and I happened to mention that I'd been married twice before, and a look clouded over her face as if I'd confessed to some unspeakable sin! He's meeting Sherry at McGinty's, I bet he's planning to pop the question. Sherry's been married six times? Martin: What's this all about? Frasier: [realizes] Breaking up?
Plan: A: Daphne; Q: Who finds an engagement ring in Martin's underwear drawer? A: Martin; Q: Who does Sherry want to marry again? A: Frasier; Q: Who realizes that Niles is guilty and insists that the private investigator call off the investigation? A: Sherry; Q: Who tells Martin that someone has been asking questions about her? A: their stepmother; Q: What does Sherry become to Frasier and Niles? A: their father's happiness; Q: What is most important to Frasier and Niles? A: McGinty's; Q: Where did Sherry tell Martin that someone was asking questions about her? A: a private investigator; Q: Who did Martin think his sons hired to check up on Sherry? A: the detective; Q: Who gives Frasier a half-finished report? A: six; Q: How many times has Sherry been married? A: their incompatible expectations; Q: Why do Sherry and Martin break up? Summary: Daphne finds an engagement ring in Martin's underwear drawer. Frasier and Niles are shaken at the idea of Sherry becoming their stepmother, but they agree that their father's happiness is most important to them. Soon afterwards, Sherry tells Martin that someone has been asking questions about her at McGinty's, and Martin immediately thinks his sons have hired a private investigator to check up on her. They deny it, but Frasier realizes that Niles is guilty and insists that he call off the investigation. He does this, but before departing the detective presents him with a half-finished report, which the brothers read and discover that Sherry has already been married six times. Sherry does not wish to marry ever again, but Martin does, and the two break up due to their incompatible expectations.