Columbo : The most inappropriate Columbo visit to talk to the killer

In Old Fashioned Murder he walks right into the niece's bedroom while she was talking with her aunt, the killer.

One other episode, he shows up at the killer's house at 3 in the morning. I forget which one.

"At the end of the day - it was his call to make. Not yours. So deal with it"

Butterfly with shades of grey he was pretty annoying, but maybe not inappropriate. He rocks up at Fielding Chase's home. Yelling out about the gate it didn't open.

They like to have him walk in on half-dressed women, like in the cosmetics queen episode and in the one about the skin magazine.