The Hangover Part II an exotic location. That's all I know". In January 2010, Phillips dismissed rumors that Zac Efron would join the cast of "The Hangover 2", though Ed Helms stated that Efron would be a welcomed addition, commenting, "I love that guy. He's actually really funny". In March 2010, Phillips denied reports that the film would take place in Mexico or Thailand stating, "I don't know. There's a lot of rumors. There was rumor also that it was going to Mexico or something and neither are true". Also by March, Galifianakis, Helms, Bradley Cooper, and Justin Bartha completed negotiations and signed deals
The Hangover (film series) resigns from The Wolfpack, but things still go awry when the Wolfpack hits the road. Todd Phillips first announced plans for a third film in May 2011, days before the release of "The Hangover Part II". Craig Mazin, who co-wrote "Part II", was also brought on abroad in May to script the film. The principal actors signed on in January 2012 and production began in September 2012 in Los Angeles, California, before moving to Nogales, Arizona, and Las Vegas, Nevada. The film was released on May 23, 2013. The Hangover (film series) The Hangover is a series of three American