Dusan Brown

Sheldon gets in trouble with Amy when he isn't impressed by her recent accomplishment, and it's up to Penny to teach him how to be a better boyfriend. Howard, meanwhile, must come to grips with Bernadette's dislike of children.

The gang remembers the events of Hurricane Irene; Barney tries to get out of wearing the ducky tie.

When Morgan's sister sees a woman who looks like their presumed-dead cousin, the BAU reopens the case of her disappearance.