AC mechanic Sahil Khan, who has left the city shaken with the brutality of his attack on 16-year-old Sakshi, apparently loved the "dark life", or so it seems going by his Instagram profile. Described by his family and neighbours as a “shy boy” who mostly minded his own business, Sahil, 20, comes across as the opposite of that on social media. Most pictures and videos show him smoking a hookah or drinking alcohol with friends.