When Christian Gerhartsreiter moved to the U.S. from Germany, he pretended to be a bond trader, a TV producer, a baronet and even Clark Rockefeller, a member of the famous and wealthy Rockefeller family. In 2008, Gerhartstreiter, then claiming to be Clark Rockefeller, made headlines when he abducted his 7-year-old daughter. The Rockefeller family made it clear that he was not a part of their family. What he was, according to police, was a killer on the run. “48 Hours" correspondent Erin Moriarty reports. This classic "48 Hours" episode last aired on 3/22/2014. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.