From TNT's official press release:

The squad jumps into action when the victims of an apparent serial killer begin turning up throughout the region.  Ham is temporarily partnered with Butch while Bobby is on an undercover assignment.  And Grace is paired with Abby Charles (special guest star Christina Ricci), a uniform cop and single mother making a rotation through the squad. Meanwhile, as Leon Cooley's execution date rapidly approaches, Earl tries to persuade Grace to find someway to help him before it's too late.

Saving Grace stars Holly Hunter as Grace Hanadarko, Bailey Chase as Butch Ada, Bokeem Woodbine as Leon Cooley, Dylan Minnette as Clay Mahoney, Gregory Cruz as Bobby Stillwater, Kenneth Johnson as Ham Dewey, Laura San Giacomo as Rhetta Rodriguez, Leon Rippy as Earl and Lorraine Toussaint as Kate Perry.


Source: TNT
(Image courtesy of TNT)