BLOG: 4 Serial Killers Who Left Their Ghosts Behind Them

History is marred by countless accounts of murderers who committed heinous acts and gruesome killings. Arguably some of the darkest crimes were the work of repeating offenders - serial killers who left their stain on the world over and over again with each horrifying act. Some of these criminals were caught and tried for their crimes, while others remained anonymous and at large. Among them all, there also seems to be a number of killers who continue their reign of terror, even after their own deaths.