CSI Exclusive: SVU Grad Michaela McManus Booked For 'Reunion' Episode

Michaela McManus CSI Cast Season 13 Former Law & Order: SVU ADA Michaela McManus will guest-star in an upcoming episode of CSI that revolves around a killer high school reunion, TVLine has learned exclusively.

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McManus, also known for her roles on One Tree Hill, The Vampire Diaries and Awake, will play Kelly, a former Mean Girl who was once BFFs with the class queen found murdered at the reunion.

Fun fact: McManus has now appeared on all three CSIs. In 2008, she turned up in an episode of CSI: NY, and the following year she dropped by the now-defunct CSI: Miami.