One of the most deadly ninja techniques in history, Dim Mak literally translates as "Death Touch." The technique involves jabbing multiple pressure points in rapid succession, causing pressure to build until the victim's heart literally explodes in their chest. Dim Mak is revealed in the second book, The Way of the Sword, when Dragon Eye's (Dokugan Ryu) ninja clan assaults the samurai school, Niten Ichi Ryū. The only two people to survive Dim Mak have been Jack and Sensei Kano.