Picked up the first season of 'Columbo ' at the local thrift shop and have been enjoying it. What a character , a great detective. I was thinking about various episodes over the course of the show and one of my favourites is in the first season called ' Murder By The Book ' which was directed by Steven Spielberg and starred the great Jack Cassidy as the murderer. Cassidy went on to play two more murderers on the show and is probably the penultimate killer in the series. Your faves?