February 9, 2006/2008
Salt Lake County, Utah
Two women are strangled in their apartments 2 years apart
The murders were believed to be the beginning pattern of an unidentified serial killer nicknamed the February 9 Killer. Both victims were strangled in their apartments, though Sonia Mejia (29), who was 6 months pregnant at the time, was also raped while Damiana Castillo (57) was not. Both cases were linked to each other through DNA analysis, but the case officially went cold in 2011.