The Hangover Part II takes no chances and opts for a safe, subdued pre-wedding brunch. Things do not go as planned, resulting in another bad hangover with no memories of the previous night. Development began in April 2009, two months before "The Hangover" was released. The principal actors were cast in March 2010 to reprise their roles from the first film. Production began in October 2010, in Ontario, California, before moving on location in Thailand. The film was released on May 26, 2011 and became the highest-grossing R-rated comedy during its theatrical run. A third and final installment, "The Hangover Part III", was released
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