TV Guide reports that the Charmed actress will play the aunt of BAU team member Morgan (Shemar Moore).
Haunted by the mysterious disappearance of her daughter, Dowse's character will contact her nephew for help when a series of unidentified bodies are discovered in Florida.
The actress played Yvonne Teasley on Beverly Hills, 90210 from 1990 to 2000 and has recently appeared in episodes of House, Saving Grace and The Mentalist.
She has also featured in a number of films including 2007's Reign Over Me, 2005's Coach Carter and 2004's Ray.
Criminal Minds airs on Wednesdays at 9/8c on CBS.
> Criminal Minds star 'wants Prentiss back'
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