How I Met Your Mother: 'The Slutty Pumpkin Returns'

Quick Review: Forget the Pumpkin, the best part about this episode is the real truth about Barney.

Episode Synopsis: The Slutty Pumpkin, played by Katie Holmes, returns, after Ted has searched for her every year at the same costume party since the Halloween they met and he lost her phone number. -tvguide

Spoilers ahead, so watch the episode before you proceed.