A California panel denied parole for serial killer Charles Manson on April 11, 2012 and scheduled the 77-year-old's next parole hearing to take place in 15 years. Here's a look at other notorious serial killers.
Dennis Radar. The BTK Killer was finally caught in 2005 after murdering 10 people between January of 1974 and January of 2005. Rader sent several letters to police stations and media outlets, anonymously taking credit for the acts.