5 Unsolved Serial Killings That Will Haunt You

Published August 24, 2014
Updated June 6, 2020

February 9th Killer

The February 9th Killer is the nickname given to the suspected murderer of Sonia Mejia and her unborn baby, and Damiana Castillo in Salt Lake City in 2006 and 2008, respectively. The murders were committed on the same day, two years apart. Mejia was sexually assaulted and strangled, but her case was never solved. Castillo was also strangled to death, but leads dried up and the investigations went dormant.

However, in 2009, the Utah Crime Lab connected the two murders through DNA evidence. Unfortunately, the man’s DNA doesn’t match any DNA markers already on file with authorities. Police working the investigation released a profile of the suspect, believing him to be Latino, medium built, and at the time of the murders, he was probably a very young adult or even a teenager.

In 2011, the authorities classified the case as cold and the hunt for this psychopath continues.

Unsolved Serial Killings Feb 9th

The victims were dumped along D.C. highways. Source: AA Roads

author
Susan Sims
author
When she's not fighting crime or cleaning the garbage disposal, you can find Susan writing about travel, science and things that go bump in the night.
editor
John Kuroski
editor
John Kuroski is the editorial director of All That's Interesting. He graduated from New York University with a degree in history, earning a place in the Phi Alpha Theta honor society for history students. An editor at All That's Interesting since 2015, his areas of interest include modern history and true crime.
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Sims, Susan. "5 Unsolved Serial Killings That Will Haunt You." AllThatsInteresting.com, August 24, 2014, https://allthatsinteresting.com/unsolved-serial-killings. Accessed May 6, 2024.