I am author/screenwriter John Niven - AMA!
Hi Reddit, I'm John Niven. I wrote the novel Kill Your Friends and also the screenplay for the film, starring Nic Hoult, James Corden, Ed Skrein and Tom Riley. Kill Your Friends is now out in US theaters/OnDemand (http://www.wellgousa.com/theatrical/kill-your-friends). Ask me anything!
My Proof: http://imgur.com/bJahYBt
UPDATE: Signing off for now. Thanks for tuning in!