When a crime achieves a kind of mythic status, it’s because it’s exceptional in one of three ways: victim, perpetrator, or method. The murders committed by Charles Manson’s “Family” cult in 1969 excelled in all three ways. The number of victims would have been sensational alone; the fact that one of them was actress Sharon Tate gave the killings a borrowed celebrity. The extremity of the violence was outstanding and the addition of the Family’s peculiar hippie symbolism to the crime scenes only made them more compelling. And had they been committed, like most violent crimes, by men, this would have been enough; but most of the Family were young women, making them irresistibly atypical killers.