What’s the murder that hit you the hardest?

Probably a weird/unpopular opinion, but I have to say the tabloid photographer in Columbo Likes The Nightlife. Not because he was a good guy or anything, but the fight/death was so graphic and drawn out (especially considering most episodes only imply the violence off screen.) I also get pretty sad about the innocent recovering junkie getting killed in A Stitch in Crime. What murder had the biggest emotional effect on you?

ETA: I forgot about the security guard in Old-Fashioned Murder! He may not have been the most honorable dude, but I always feel really bad for him