Halloween is no treat for Maya when Finch gets her to wear an embarrassing costume to the office. Luckily, she meets her Prince Charming in an elevator. Meanwhile, Jack confesses to a dirty trick he played on a young impressionable Maya; and Elliott and Finch hatch a plan to find out if Nina's friend Binnie really exists. Finally, Finch claims he wasn't the least bit scared by Alfred Hitchcock's horror masterpiece Psycho, so Elliott sets out to prove he's lying.

Maya's attempt to host a murder mystery party is plagued with problems. Elliott wants to ditch the party for an Armani gala being held on the same night, Nina shows up with Maya's old boyfriend Derek, Jack wants to wear Elliott's costume, Finch is trying to make time with the caterer (who is dressed as a large-bosomed French chambermaid), and gamemaster Larry is a down-on-his-luck actor who spends most of the party on the phone with his agent. Everything is thrown into chaos when Maya's next door neighbor suffers a heart attack and drops dead -- and everyone but her thinks it's part of the game.

The staff prepares for the annual softball game against the magazine Cosmo. Jack hires Steve Garvey, so that he can play on the team. Maya turns out to be a great pitcher but becomes too competitive.