Contract Killer

Contract Killer is a perk in Fallout 3.

Effects
Once you have the Contract Killer perk, any good character you kill will have an ear on their corpse. This ear can then be sold to Daniel Littlehorn, the CEO of Littlehorn and Associates at the scrapyard, for caps and negative Karma. Specifically Littlehorn will pay 15 caps per ear.

Bugs

 * Characters that are essential are also scripted as good characters (including Daniel Littlehorn) and will drop an ear every time they're knocked unconscious, for a potentially endless amount of ears.