Dusan Brown

Sheldon gets in trouble with Amy when he isn't impressed by her recent accomplishment.

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.

Fiona runs a school project for Marcus' class; Will takes Marcus on a shopping spree; Will plans a party to impress Sam.

Will throws a poker night for his friends, including Andy, Crosby, TJ and Richard, but the event is hijacked by Fiona, who has no problem making herself at home with the guys. Meanwhile, Marcus goes on his first sleepover, but has a hard time staying the night when he finds the others aren't as nice to him as he had hoped.

Will agrees to help plan Marcus' birthday party, but complications arise when Will and Andy learn of another celebration the same day; Sam and Fiona have a disagreement.