First one is answered.
Athanalo kadha...Oru confusion...In case they are caught during attempt, he won't be revealed since they already have a history. Athaayirikkum uddeshichathu.
Hack cheyythathu Psycho Manjooran. Pinne angottu ellam observe cheyythathu Mr USA aanu. He didn't do any hacking code. Plus as told, he knows the contact details and hack conversation.
Last edited by intexaqua; 27th January 2020 at 10:18 PM.
1. The 5th one already used in the "last twin murders"
2. One possibility is not the injection but drugness experience through hypnotism(so many youtube videos which related this item) [ spinner item & 'hello dailogues' in the movie pointing to this area ] (Get this idea from some discusdion with friends)
All other points mentioned by @intexaqua