Sally Field returns to the role that won her a guest-actress Emmy.
Field is back for four episodes as Abby's bipolar mother, Maggie, who resurfaces after Abby's brother Eric (Tom Everett Scott) is arrested for going AWOL from the Air Force. The trio shares a less-than-loving reunion at Eric's Omaha military base, where old wounds and ugly accusations lead Maggie to spill a brutal truth about Eric's battle with mental illness---and why the terminally bitter Abby was kept in the dark about it. Back in Chicago, a blizzard hampers Nathan and Corday's desperate attempt to save a family torn apart by a drunk driver. Nathan: Don Cheadle. Harkins: Leslie Bibb.