Some criminal cases stay in the headlines for years, while others continue to haunt people long after the verdict.
Whether it's because of the motive, the people involved, or the twists that kept investigators guessing, these stories show just how disturbing real-life crimes can be.
From a woman who allegedly built a business around poisoning husbands to a decades-old m*rder mystery that finally reached an answer, each case reveals a different side of human behavior that is difficult to understand.
