It's Halloween and Betty is in for a series of frightful experiences, ranging from showing up dressed for the Mode costume contest . . . only to learn there isn't one, to dealing with her growing attraction to Henry (guest star Christopher Gorham, "Jake 2.0") -- while a jealous Walter fumes -- and, worst of all, tracking down a watch Daniel left at one of his many girlfriends' apartments (he just can't remember which one). Meanwhile, Daniel pays a visit to his mom (guest star Judith Light, "Who's the Boss?") in rehab, and Wilhelmina is horrified to learn that she can't fit into a designer gown.