Tales from the Crypt (1989) : 5x1

A sneaky con man has a talent for killing people after he sells them phony tombstones. He soon learns that some for his new victims have a fortune buried in their cellar. He marries their daughter and kills the parents but when he goes down in the basement he gets a big surprise. A husband hires a detective to spy on his wife whom he believes is cheating on him with a priest. When he learns that he's been conned, he decides to kill him himself. That day he learns that they're was nothing going on between them and he is relieved. But he is mistaken for his wife's so called boyfriend and killed by the detective he hired. Dalton is a seasoned combat photographer who finds himself falling for a beautiful women who just happens to be the wife of his friend. One day Ike sends Dalton into a disease warfare area. Dalton returns, but not the way he used to be. He soon writes a letter about how he was set up and his wife and friend also contract the same disease.