The Drunken Killer - Part 2

C.I.D. – Season 1

After a bottle of alcohol is found in Alok's room, interviewing his family reveals that he is, in fact, addicted to alcohol and becomes an entirely different, more aggressive person while drunk. However, an inspection of the bottle alcohol reveals that there are no fingerprints on it. A further investigation reveals that Alok might have been sedated. Could it be possible that he is being set up?