Hollywood star Ashton Kutcher prepares to testify against 'psycho-sexual thrill-killer who brutally murdered his girlfriend 14 years ago'

Ashton Kutcher (right) is preparing to take to the witness stand to testify against a man suspected of the grisly murder of  the actor's then-girlfriend. Michael Thomas Gargiulo (center) stands accused of murdering three women, including Ashton's then-girlfriend, 22-year-old Ashley Ellerin, (left) on February 21, 2001.  Ashley, who lived just 400ft away from Gargiulo in Los Angeles, was attacked while she was showering and stabbed 47 times.