After Kenneth Bianchi was arrested in early 1979 on suspicion he was responsible for the so-called Hillside Stranglings near Los Angeles, he made an outrageous claim: He did kill 10 women in LA and another two in Washington state, he said, but not as Bianchi. He was a split personality and had killed them as his alter-ego, Steve. Not only that, he said, but he'd had help from his older cousin, Angelo Buono. Bianchi's confusing confession led to one of the longest and most sensational criminal trials in California history.