Exclusive: Grey's Digs Dirt Star as McArmy's Old Flame

As teased weeks ago in a Mitovich Mega Minute, Grey's Anatomyis going to be shedding light on the shadowy Owen Hunt — by introducing viewers to someone from the Army vet's past.

Playing Owen's ex-lover, TVGuide.com has learned exclusively, will be Laura Allen, whom you either know from A) Dirt, B) The 4400 or C) All My Children. Allen will guest-star in this season's 15th episode, which is shooting this week (and also marks Melissa George's final appearance as Sadie).

Kevin McKidd himself gave me the heads up on this storyline development when I ran into him at Sunday's Golden Globes after-parties. McKidd also hinted that to further explore his character, Hunt's mother or father might be cast later this season.