David Trice

Sheldon and Raj go to a university party, Leonard disapproves of Penny's belief in psychics and Raj lusts after a girl named Abby whom he meets at the party.

When the girls' trip to Vegas falls through, the guys invite them to a Dungeons and Dragons date night that results in Sheldon and Amy's relationship taking an unexpected turn.

Malcolm's plan to sabotage Dewey's entry test to the Krelboyne school for the gifted backfires when he is diagnosed as mentally disturbed.

Leslie asks Ann to help her convince Chris and Ben to give the parks department more money. Meanwhile, Ron and Andy coach basketball, and April makes an announcement.

The BAU is called to search for a man who is targeting children when an eight-year-old is found murdered on the Appalachian Trail.

Randall adjusts to the foster system, Kate and Toby take the next step in their relationship, Kevin visits Sophie in New York, and Jack and Rebecca finalise Randall's adoption.