Wolfpack Tracks Down Mr. Chow in New <i>Hangover Part III</i> Trailer

Warner Bros. has released a new full-length trailer for director Todd Phillips' The Hangover Part III, which reunites the Wolfpack to take a troubled Alan (Zach Galifianakis) to a mental-health facility, only for things to (naturally) go horribly wrong -- in the form of John Goodman, who takes Doug (Justin Bartha) hostage and forces the others to track down Mr. Chow (Ken Jeong) and the $21 million he stole.

Bradley Cooper and Ed Helms also return for the final installment in the hit series, joined by Heather Graham, Jeffrey Tambor, Melissa McCarthy and Mike Epps. Check out the trailer and new posters below. The Hangover Part III opens May 24.

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