The horrible antagonist of the Ring films proves that kids don't even have to be alive to be creepy. Samara was the adopted daughter of a couple on a small island in Washington State who died at the bottom of a well - and boy, is she pissed. Now anybody who watches a mysterious videotape is cursed by her ghost to die in seven days. That's kind of an indirect way to kill people, but she is still one of the deadliest killer children.