Troubled life of American Psycho fan who forced ex-girlfriend to watch him hack her mother and new boyfriend to death with an axe before killing himself

-Brian Douglas White, 19, went on deadly rampage in Livonia, an upscale suburb of Detroit

-He forced ex-girlfriend Desiree Staperfine, 17, to watch brutal murders

-White allegedly hacked her mother and current boyfriend to death with an axe before turning a gun on himself

-Now-deleted Facebook page reveals teen obsessed with American Psycho movie; he quotes several disturbing lines from 2000 cult classic

http://www.dailymail.co.uk/news/article-2125420/Brian-Douglas-White-Facebook-boasts-American-Psycho-fan-hacked-exs-mother-boyfriend-dead.html