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.
Charles Manson. Manson and his gang most notoriously killed actress Sharon Tate in 1969. The Manson Family, which was mostly composed of naïve and troubled young women, was convicted of killing seven people total.