Airstream Diner.

Duff is invited to design a cake for the premiere of "Harry Potter and the Half-Blood Prince"; Mary Alice and Duff deliver a cake for the publication of the new "Ghost Girl" novel.

The team creates cakes that will be photographed for a book about the bakery.

A medium comes to check out Charm City Cakes; "Independence Day" wedding cake; a holiday cake is delivered to the Dizz.

Cake of Philadelphia's Mummers Parade; Duff throws out the first pitch at an Orioles game; a client challenges Geof to a duel.

Cake of the "Carnival Pride"; marimba cake.

Ben engineers an evil robot cake from the TV series "Dr. Who" that spins, yells and destroys; Duff and Mary Alice make their stage debut with the "Annie" national tour.

A bride and groom each order a surprise cake for the other; human-torso cake.

The Charm City gang creates a video tribute at the Contemporary; Duff and Ben come up with the craziest video game star ever.