Nick and Schmidt argue over celebrating their 10th anniversary as roommates while Jess and Winston compete for a football star's affection.
A brutal double murder has haunted Agent Rossi for years and now he is determined to track down the killer.
In the 6th season opener, Charlie runs into an ex-girlfriend (Rena Sofer) and a child who bears a striking resemblance to Charlie.
The CBI team launches an investigation into the National Society of Authentic Santas when one of its members is found murdered.
Louis prides himself on being a fun dad, but after he has an accident and is forced to stay home with the boys, he scrambles to find ways to entertain the kids.