Killers you like when you aren't supposed to, and vice versa.
There are plenty you're supposed to like - never for the murder itself, as Columbo says in that one scene - and ones that you don't like even apart from the murder, but sometimes it goes the opposite way. I can't help liking Milo Janus and Paul Gerard a little, and of course Leslie Williams. There are even some victims I'm more fond of than you're meant to be, like Ric Carsini, and when it comes to would-be victims, Jerry Parks.
At the other extreme, some people here have said they're not really able to like Abigail Mitchell or Adrian Carsini as much as the story wants you to.
Are there some "sympathetic" ones that you don't sympathize with, or the opposite?