Leaving out his wife Shera who played various characters, who was the most attractive lady in Columbo. I have to say my favourite lady is Mariette Hartley in Publish Or Perish (Eileen Mcrae)and Try and catch me (Veronica). Of course there are many ladies in Columbo and many very pretty but for me it would be Mariette. For many years I thought she also was the wheelchair bound wife in playback but that was Gene Rowlands.

Just goes to show you that the average Columbo enthusiast is an idiot.

#1 sexiest is is Gretchen Corbett, in the bikini, in "Exercise in Fatality".

2nd place is from "How to Dial a Murder": Dog Trainer Tricia O'Neil also has a smoking-hot body sans bikini).

Top five remains constant for me over the years.

#1-Janet Leigh
#2-Barbara Rhoades
#3-Gretchen Corbett
#4-Mariette Hartley
#5-Joanna Cameron