'CSI': Elisabeth Harnois upgraded to cast regular

elisabeth-harnois-getty.jpg"One Tree Hill" and "Point Pleasant" star Elisabeth Harnois will make her first appearance in the May 5 episode of "CSI: Crime Scene Investigation" as Conrad Ecklie's daughter, who he is estranged from. Her character works for the LAPD and helps the Las Vegas CSIs find a serial killer.

The role was always expected to be recurring, but Harnois has now been upgraded to a full-time series regular, Deadline reports. "CSI" has not yet been picked up for the 2011-2012 season, but CBS is expected to announce a Season 12, as the series remains strong across the demographics board.

After playing Satan's daughter in FOX's one-season "Point Pleasant" supernatural thriller, Harnois had a successful guest arc on "One Tree Hill" and has appeared in several shows and films since, including the recent "Mars Needs Moms."
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