10 Serial Killers Who Turned Themselves In

4. Robert Bruce Spahalski

On November 8, 2005, 51-year-old Robert Bruce Spahalski arrived at the Rochester Police Department's police station and confessed to the murder of an acquaintance, Vivian Irizarry, who he killed several days prior during a crack-fuelled hallucination (where he envisioned her as a demon).

After being taken into custody, he further confessed to bludgeoning Charles Grande to death in October 1991, and despite being investigated for Grande's murder at the time, he was ultimately acquitted.

Spahalski then admitted to killing Moraine Armstrong on New Year's Eve 1990 and Adrian Berger in July 1991, bringing his total known victims to four. On December 13, 2006, he was sentenced to 100 years in prison for the killings.

But in a gnarly twist, Robert's twin brother Stephen had also admitted to murder decades prior, having killed a man at the mere age of 16 in 1971, a murder for which Robert was himself originally a suspect until Stephen confessed.

And though Stephen had been released from prison long before Robert confessed to his own killings, he was back in jail for a separate crime by 2005.

When asked about his twin brother being a serial killer, Stephen said, "I thought I was the only murderer in the family."