A lot of Columbo fans tend to peg Dagger of the Mind as one of the worst entries in the series' classic run, but I go in the other direction, mainly because Baseheart and Blackman make for a wacky, refreshing turn as a loony, air-headed, over-the-hill villain tag team. It often feels like there are two separate stories going on that just happen to intersect at coincidental, key moments, which feeds into the anything-goes vibe of the episode. Underrated.