Wayne is a young stud on the scene, sleeping with rich older women. He claims to have fallen for lady novelist Teresa. Her sister Jess is some kind of agent and likes to meddle in Teresa’s business. Teresa announces on TV that she will marry Wayne but later that night she calls to say she hates him and the wedding is off. Mixed messages lady. He drives over and shoots her.
Columbo shows up at 18 minutes and 19 seconds and he cracks the case wide open. Turns out that when Wayne shot her she was already dead. Her jealous sister did the actual killing.
The columboid is knickers. Actual knickers, on the wrong way round.
Things we learn about Columbo: he has a brother who is one year and 7 months younger than him, he has an older brother and can impersonate his voice.
During this episode I re-arranged my books. I have 521 of them. It made me sweat.