In 1993 18-year-old Tricia Pacaccio was stabbed to death on the front steps of her parents Illinois home.  She was stabbed over 40 times. Her murder went unsolved for years. Then in 2001 22-year-old Ashley Ellerin was found stabbed to death over 40 times in Hollywood, California.  Like Tricia her murder would go unsolved for years as well.  In 2005 another California woman Maria Bruno was violently stabbed 17 times and murdered.  Some 3 years later Michelle Murphy was stabbed in her California home but fought off her attacker and survived and this time the perpetrator left DNA.  These murders would go on to be called the Hollywood ripper murders.  Tune in to find out who and how they caught the killer!