03/18/2012 (08:00PM - 09:00PM) (Sunday) : JEAN SMART ("SAMANTHA WHO") GUEST STARS - HARRY DEFENDS TWO SEPARATE CLIENTS: A SCHOOL PRINCIPAL TRYING TO EXPEL A STUDENT FOR HAVING ANXIETY ATTACKS AND A FORMER CLIENT WHO BELIEVES HIS SISTER WAS MURDERED, WHILE NATE REPRESENTS AN OLD CLASSMATE - Harry (Kathy Bates) represents a school principal trying to expel a student with an anxiety-based condition which causes her to have uncontrollable outbursts. In addition, Harry reaches out to Roseanna Remmick (Jean Smart) for help with a former client who is convinced that his sister was murdered by her husband. Elsewhere, a former high school classmate of Adam's (Nate Corddry), comes to him for help with her plea bargain on drug and prostitution charges. Tommy (Chris McDonald) prepares for a gala where he hopes to win Trial Lawyer of the Year. Mark Valley and Karen Olivo also star.