Director Todd Phillips says actress Heather Graham is like ray of light for him in The Hangover Part III.<br>Graham was seen in the first edition of The Hangover in 2009 as Jade, a Las Vegas based stripper. <br><br>However, she was not there in the second edition of the movie, which released in 2011 but has resumed her role in the third instalment, which opened here Friday and has got thumbs up from reviewers.<br><br>‘Heather has always, for me, represented a sort of ray of light, like sunshine, particularly in the bleak landscape that has been these Hangover movies,’ he said. <br>