Lonnie David Franklin, Jr.
Between 1985 and 2007, Lonnie David Franklin Jr. may have killed 25 women and possibly dozens, even hundreds, more. He's known as "The Grim Sleeper" for taking a 14-year break from his murder spree, from 1988 to 2002 – though it looks like he might not have "slept" at all. Either way, unlike his more infamous peers like the Hillside Strangler or the Nightstalker, Franklin largely operated outside the media spotlight by targeting women on the fringes of society, including drug addicts and prostitutes, often dumping their naked bodies in alleys or on the side of the road. According to the Los Angeles Times, when police searched Franklin’s home in 2010, they found even more pictures of women, naked with their eyes closed, implying that the scope of Franklin's horrendous crime spree could be much larger than previously thought. Franklin was convicted of the murders of 10 women and sentenced to death in June of this year.