John Slattery! The Mad Men star will have a multiple episode arc on the new season of Arrested Development. There is no word yet on whom he’ll be playing or if he’ll be blind or have a law blog. The role is be described as “top-secret,” which makes it even more exciting, as if it were a riddle. Maybe he’ll play a top secret service agent. Or, better yet, he’ll be the president of Pop Secret, the popular popcorn brand – he’ll be the top of Pop Secret.