Jennifer Beals Guest Stars on FOX's THE MOB DOCTOR Tonight

'The L Word's' Jennifer Beals will guest star on an all-new episode of FOX's THE MOB DOCTOR airing TONIGHT, DEC. 31 (9:01-10:00 PM ET/PT).

In the episode entitled "Sibling Rivalry", when a champagne bomb is delivered to Constantine, he and Celeste (guest star Beals) go on high alert to determine who wants him dead. Meanwhile, Nate (Jesse Lee Soffer) turns to Grace (Jordana Spiro) after he accidentally jeopardizes a mobster's valuable racehorse. Back at Roosevelt Medical Center, Grace is tapped to treat Brett's (Zach Gilford) estranged brother, Jack Hanson (guest star Derrick Trumbly), following a severe cycling accident.

ABOUT THE MOB DOCTOR:

For most physicians, the Hippocratic oath is sacred. But for one Chicago doctor, who is indebted to the mafia, saving lives isn't her only concern. THE MOB DOCTOR is a fast-paced medical drama focusing on a young female surgeon caught between two worlds as she juggles her promising medical career with her family's debt to Chicago's Southside mob.

DR. GRACE DEVLIN (Jordana Spiro) is a top resident at Chicago's Roosevelt Medical Center. Smart and self-assured, she's heralded as one of the country's most promising young surgeons. But family ties keep her glued to her Southside roots. To pay off her brother's life-threatening gambling debt, she makes a deal with the devil and agrees to work "off book" for the mafia men she once despised.

At the hospital, Grace must deal with emotionally compelling cases - a young woman in need of a heart transplant, a family decimated by a hit-and-run driver, the mass chaos in the wake of an 'L' train collision. But in her other vastly different world, she must juggle an onslaught of mob-related demands, including operating in illegal backrooms, treating hit men hiding from the law, performing emergency surgery on a high-end call girl, even saving a juiced-up race horse.