- Columbo: [on the phone with his wife] I'm gonna hang up. You can keep talkin' but I'm gonna hang up.
- [last lines]
- Columbo: It could only be you. By your own admission, it had to be you. Mr. Stafford was last seen around 7:30, wearing his business clothes. Now, he's alone in the building, the building is locked, and the next morning, he's found dead in his gym clothes and at 9:00 the previous evening, nine hours before the body was found, you, and you alone, knew that he was in his gym clothes. You said so. You swore to it in front of five witnesses. How did you know he was in his gym clothes, if you didn't change the clothes? You try to contrive a perfect alibi, sir, and it's your perfect alibi that's gonna hang you.
- Columbo: [early in the morning after arriving at the crime scene with a thermos full of coffee] You know, before coffee, I'm up, I'm walking around, but I'm not awake.
- [grunts]
- Milo: Buddy is as honest as I am.
- [vouching for employee with a criminal record of fraud attempting to cover up the murder he committed]
- Jessica Conroy: [Columbo has just rung the doorbell to Milo Janus' mansion and is clearly distracted when the bikini-clad Jessica opens the door] Yes?
- Columbo: I'm looking for um... uh... uhh Mi-lo Janus.
- Jessica Conroy: Are you sure?
- Columbo: Am I sure what, ma'am?
- Jessica Conroy: You sounded as if you weren't sure who you were looking for.
- Columbo: Milo Janus. Sure! Oh yeah!
- Jessica Conroy: Well, this is his house.
- Columbo: No, I was just think' about somethin' else... uh...
- Gene: I didn't spend eighteen years as corporate controller for nothing, and I can smell film-flam right down to the paper clips you make me buy.
- Jessica Conroy: [after Milo leans in to kiss her... and she enjoys it] You know, there's one thing that bothers me about you.
- Milo: What's that?
- Jessica Conroy: You're a little unsure of yourself.
- Milo: I'm very unsure. But I'm encouraged by your response.
- [smiles]
- Milo: He won't find anything, and in eight months I'm going to be in my villa overlooking the Adriatic with two million in Swiss francs to keep me warm.
- Milo: [Ruth, angry that Milo has made a pass at her, starts to leave the restaurant] Where you going?
- Ruth Stafford: Out!
- [She throws a glass of wine in Milo's face]