Maddening variation on the zombie theme, from New Zealand, about "experimental mistakes"(..which evolve from humans into grotesque walking fiends which cause mindless violence), thanks in part to a deranged scientist's insane attempts to create a method for eternal life.
Gary Day is Dr. Archer Howell, a determined, and just plain nuts, scientist who will stop at nothing to see his experiments become a success. He uses Michael Tucker(Michael Hurst)to kill his father, Howell's partner who threatened to expose his sick, dangerous experiments. Michael is injected in the butt while showering from behind by Howell, and forced against his will(..through a form of mind control, I gather, since Howell's expertise were in the brain and it's functions)to blow his parents away with a shot gun. Thrown into an asylum, the years Michael spent locked away Howell had moved to his own island to continue his experiments in relative peace..once a tourist destination, Howell's presence has caused the island to stagnate in popularity. Meanwhile, Michael prepares for revenge, with girlfriend Sandy(Margaret Umbers)and pals Lucas & Jeannie(William Upjohn & Norelle Scott)tagging along with him to Howell's island. What Michael and his gang were unprepared for was a duo of Howell's former patients, Spider(David Letch)and his very ill partner whose condition isn't responding well to heat. Spider plans to get Michael back for a scuffle they have on board the ferry. Spider becomes an even more intimidating antagonist that Howell, reacting negatively when the scientist rejects his plea to save his friend, seeking revenge after being considered obsolete, due for extermination, letting those locked away free. This, in turn, sets off a chain of events threatening life on the island. Even worse is that Howell seems to realize that those he had performed experiments on before will mutate into homicidal creatures causing potential global catastrophe!
The movie is nutty as a fruitcake. The film has some wild camera-work to complement it's really bizarre story-line. Replete with violence and ugly characters, often shot in darkened buildings with the director effectively using small lights to not completely establish what the human monsters look like. David Letch as Spider, a real wacko, will probably walk away the most memorable face of the film, he's the reason everything falls apart(..along with Howell, that is)to begin with, unleashing a threat to the human race. Day, as Howell, is never seen as sane, walking around with a cane, his face carrying a look of crazed dedication to his own work, not caring the least little bit the consequences of his actions. Hurst, as Michael, never appears completely well;even in his scenes with Sandy early on, you can see he's not operating at full capacity. After entering the hospital and meeting his enemy once again, Michael goes over the edge, unstable, realizing that Howell has polluted the population with his "scientific breakthrough". I was never quite sure of Howell's motives regarding his experiments, and how he could succeed in actually continuing his work when it's obvious he's a lunatic.
DEATH WARMED UP features Howell's handiwork, cutting into the skull's of human guinea pigs, blood squirting on his nurses faces, seeing the harmful side-effects of his experiments. We also see humans, who were experimented on, their foreheads bulging, vomiting puss/mucus, noticing how Howell's work has caused severe abnormalities, the body rejecting the wrongful tampering of the brain. The slaughter of the parents with a shotgun by Michael's hand, is rather shocking. Like in past movies featuring experiments-gone-awry, DEATH WARMED UP shows the chaos that ensues when a scientist attempts to tamper with life's cycle.