Alex O'Loughlin will be returning to CBS.

The former Moonlight star will guest star on Criminal Minds in April.

A show representative told TV Guide that the actor will portray a serial killer later this season. In an interesting twist for the show, the installment will be told from the point of view of the bad guy himself, as his latest crime and its ensuing manhunt unfold.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.