Is It All in Patrick Bateman's Head in 'American Psycho'?

Based on the wickedly brilliant novel by Bret Easton Ellis, the 2000 film American Psycho is a vicious satire depicting the empty grotesquerie of 1980s corporate yuppie life and male ego. Directed by Mary Harron, it strikes a balance between stylish and horrific, with a career-defining performance by Christian Bale to tie all the chaos together.