David Trice

Sheldon and Raj go to a university party; Leonard disapproves of Penny's belief in psychics; 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 & Dragons date night that results in Sheldon and Amy's relationship taking an unexpected turn.

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 team looks into the death of an eight-year-old on the Appalachian Trail. They comb through the forest to search for a man who is targeting children.

After an explosion blasts through a small town school, the team attempt to locate the bomber before another attack occurs.

Jill learns how to be a foster mother from Christy, while Bonnie tries to prove her worth as a building manager.