The Hangover Part II did not have the full support of my entire cast and crew." Liam Neeson replaced Gibson after being invited by Cooper, who worked with Neeson on "The A-Team", to take the part. Neeson, a fan of the first film stated, "I just got a call to do a one-day shoot on 'Hangover 2' as a tattooist in Thailand, and that's all I know about it". Gibson was reportedly furious over the decision. A source close to Gibson stated, "He doesn't understand why Mike Tyson, a drug user who turned his life around, was given a chance while Mel was kicked
The Hangover Part III new idea. As far as where it takes place, I said I'm very open." Also during May, Craig Mazin, who co-wrote "The Hangover Part II", entered early talks to write the script for the third installment. In December 2011, Bradley Cooper appeared on "The Graham Norton Show" to promote "The Hangover Part II" DVD and Blu-ray release, where he stated he "hopes" that "The Hangover Part III" will start shooting in September 2012, and also stated that Todd Phillips is working on the script. In January 2012, it was reported that stars Bradley Cooper, Zach Galifianakis, and Ed Helms were