Michael Tran/FilmMagic.com
Lynette Rice
March 05, 2012 AT 06:35 PM EST

An actor from an ABC drama will jump over to CBS on March 14 to heat up the action on CSI.

EW can report exclusively that Paul Blackthorne (The River, Lipstick Jungle) will guest-star as Tom, a pompous, slick, and charismatic college professor who teaches a popular class on the nature of celebrity. But a protegé of his who employs some questionable methods to operate his own gossipy video blog ends up dead. Tom ends up defending his methods to investigators, but makes no apologies at the same time.

Blackthorne currently plays a TV producer named Clark Quietly on ABC’s freshman suspense The River.

He guest-starred on CSI: Miami in 2010.

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