Dr. Haha Lungis the author of more than a dozen books on martial arts, includingMind Penetration,MindFist,The Nine Halls of Death,Assassin!,MindManipulation,KnightsofDarkness,Mind Control: The Ancient Art of Psychological Warfare,The Lost Fighting Arts of Vietnam, and with co-author Christopher B. Prowant,Mind Assassins,NinjaShadowland, andMentalDominance.US
![The Nine Halls of Death: Ninja Secrets of Mind Mastery [Paperback]](/itemImage/2/7/0/3/2_4064307.jpg "The Nine Halls of Death: Ninja Secrets of Mind Mastery [Paperback]")