AllMovie

Forget the old anti-drug television commercial with the egg and the frying pan, the drug-addicted psychopath in Joe Castro's Jackhammer Massacre is all the ammunition that Nancy Reagan will ever need to convince youngsters to "Just Say No." A formerly successful businessman whose dangerous drug addiction leaves him jobless and indebted to a ruthless drug dealer, Jack Magnus is injected with a lethal dosage and left for dead by the pusher for failing to make a payment. Awakening to find that he is stronger than ever before, paranoid Jack embarks on a brutal killing spree that the city -- and the viewer -- will never forget.