Sheldon creates a monster when he introduces Penny to the world of online gaming. Especially when her addiction wreaks havoc on his life.
Michael seeks revenge against Whistler and Gretchen and uncovers unbelievable news; Lincoln and Michael are reunited with the gang and get an offer from a Homeland Security agent; Mahone experiences a devastating loss; T-Bag is deserted.
The BAU team investigates a wealthy couple's murder at their home following a Super Bowl party; someone places a 911 call quoting Bible passages seconds before the murders.