Slither

A malevolent, sentient extraterrestrial parasite lands inside a meteorite and goes into the town of Wheesly, South Carolina, where it infects wealthy resident Grant Grant, taking over his body and absorbing his mind. With the alien in control of his body, "Grant" begins to transform into a grotesque, tentacled monstrosity. He also abducts and infects a local woman, Brenda, to serve as a breeder for his alien larvae. His wife Starla becomes suspicious over the changes in his appearance and his behavior, leading to Grant attacking her. When the police arrive to rescue Starla, Grant flees.