Lucky and Liz celebrate an early Christmas, but Matt interrupts;
Sam and Michael head off to Chicago to try to track Abby down;
In the wake of a major tragedy Michael spins out of control. (Think Jason 2.0);
Sam begins to have a melt down; she fights feelings of disgust and sheer anger;
Maxie pretends to help Elizabeth's cause in order to spend more time with Matt;
More of Shawn's past is revealed.