Notes

I always hated killing sims and got no thrill from accidental pool accidents. What I did get my kicks out of, was having my Sims kill their fellow Sims. In TS2 my favorite method was the "Crate of Throwing Axes" from simwardrobe because it was the closest thing to stabbing I ever got with my Sims.
Unfortunately the family friendly atmosphere of TS3 was getting on my nerves, and I was bored with the - throw your victim in a dungeon and wait for them to starve - method of killing. So I made Dexter.
You'll find Dexter in the same category as the easel (study -> hobbies). Put him in your inventory and your Sim will gain new ways to kill other Sims.