(Hong Kong 2009)(Horror|Murder|Thriller|Driller-Killer)
Police officer Tai's bloody body falls seven stories into a courtyard, Tai and his Chief Inspector are on the trail of a serial killer whose known M.O. is an electric drill.
Chief Inspector Ling wakes up at the hospital unable to remember anything leading up to the attack. Suspicion then arises that Chief Inspector Ling may be the murderer