No mysteries here! Former "Cold Case" actress Kathryn Morris and her boyfriend of three years, actor Johnny Messner, exclusively revealed to Us Weekly that they are expecting not one, but two bundles of joy come September.

"We're beyond excited and doubly blessed!" the happy couple told Us of their twins-to-be. Morris, 44, is best known for her role as Detective Lilly Rush on the now-defunct hit CBS series, which came to an end in 2010.

PHOTOS: Babies of the year

Indeed, Morris and Messner have another big reason to celebrate: She's currently wrapping up filming for a CBS drama pilot for "Surgeon General," and he's just finished shooting for "The Outsider" with Jason Patric and James Caan.

Morris has also had roles in Steven Spielberg's sci-fi epics "A.I. Artificial Intelligence" and "Minority Report," playing Tom Cruise's wife in the latter.

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