A day after 11 members of a family were found dead at their home in Delhi, the police are probing chilling details of the Delhi 'death house'. The two diaries with handwritten notes, police say, narrate the way bodies were found and point towards some mystical practices. The police are also probing whether there is a link between the 11 deaths and 11 pipes that have been found protruding out of the house. Was this a mass suicide or mass murder? And is there an occult angle to this case? Several questions still remain unanswered.