Deathdream genre drama film
Plot
In Vietnam 1972, American soldier Andy Brooks is shot by a sniper and falls to the ground. As he dies, he hears his mother's voice calling out, "Andy, you'll come back. You've got to. You promised."
Sometime later, his family receives notice of his death in combat. Andy's father, Charles, and sister, Cathy, begin to grieve, but his mother, Christine, becomes irate and refuses to believe that Andy has died. Meanwhile, a trucker stops at a diner and says he's picked up a hitchhiker who's a soldier. Hours later, in the middle of the night, Andy arrives at the front door of the family house in full uniform, apparently unharmed; the family welcomes him back with joy, concluding the notice of his death was a clerical error. When the father says the military told them Andy was dead, he replies "I was." The family laughs, thinking this a joke.
In the next few days, Andy displays strange, withdrawn behavior, speaking only rarely, dressing in a concealing manner, and spending his days sitting around the house, listless and anemic. At night, though, he becomes inexplicably animated, wandering the town and spending time in the local cemetery. Meanwhile, local police investigate the murder of a local trucker, who was found with his throat slashed and his body drained of blood.
Charles attempts to confront Christine about Andy's erratic behavior. Christine insists that Charles was too withdrawn and authoritarian toward Andy; Charles counters that Christine made Andy too sensitive by smothering him. Andy continues to display weird behavior: he attacks a neighbor boy who attempts to demonstrate his karate skills, then kills the family dog when it tries to protect the child. Charles witnesses the killing, tells his wife that their son is crazy, and then goes to the bar, where he tells his friend, a doctor, what Andy did.
Charles brings the doctor home, and he offers Andy a free checkup. The doctor asks Andy questions related to the truck driver, suspecting him of being the one who killed him. The doctor later tells Charles about the truck driver and says he needs to inform the police about the suspicious coincidence of Andy's return. Andy visits him at his office in the middle of the night, angrily demanding a checkup, but the doctor can't detect a pulse or heartbeat. Andy tells him, "I died for you, Doc. Why shouldn't you return the favor?" He attacks and kills the doctor with a syringe, then uses it to inject the doctor's blood into his arm. It's clear that Andy is some kind of vampire or zombie who needs the blood of others to reinvigorate his decaying body.
The next day, Charles learns that the doctor was killed and becomes convinced his son is responsible for the deaths. When Christine tells him that Andy is on a double date with his high school sweetheart, Joanne, his sister, and his best friend, Bob, Charles gets his gun and goes looking for them. At a drive-in cinema, Andy visibly decays due to lack of blood. Cathy and Bob briefly leave the car to go get more popcorn. Joanne attempts to strike up a conversation with Andy, but when Andy's decay becomes more visible, he attacks and kills Joanne. Cathy and Bob return to the car to find Andy in a raged frenzy and attacks the two. Andy strangles and kills Bob and attempts to run over Cathy with the car. A stranger shoves Cathy to the side and is hit by Andy and killed.  Andy flees in the car before he can inject his victims' blood.
Andy returns home, where his mother protects him from his father. Charles, stricken with grief, commits suicide when he sees the monster his son has become. As Christine is driving Andy away, he is shot twice by police, and their gunfire sets the car on fire. The police pursuit ends at the graveyard where Andy had been spending time. They discover his decayed corpse writhing in a shallow grave beneath a tombstone on which Andy had scrawled his own name and the dates of his birth and death. Christine sobs as she tries to cover the corpse with dirt. Her car explodes, and she tells officers, "Andy's home. Some boys never come home."
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