Slither (2006 film)

Slither is a 2006 American science fictioncomedy horror film written and directed by James Gunn in his directorial debut, and starring Nathan Fillion, Elizabeth Banks, Gregg Henry, and Michael Rooker. The film was produced by Paul Brooks and Eric Newman.

A meteorite housing a malevolent, sentient extraterrestrial parasite crashes into the town of Wheelsy, South Carolina. While frolicking in the woods with Brenda, local car dealer Grant Grant finds the parasite and is infected by it. The parasite takes over his body and absorbs his consciousness and memories. With the alien now in control of his body, Grant begins to slowly change into a tentacled sluglike monster.Many pets soon disappear, but Grant is not suspected. However, his wife Starla begins to question his health he explains the initial changes in his appearance as an allergic reaction to a bee sting, saying that a doctor has already given him something for it, but Starla soon learns this is a lie. Starla contacts the police chief Bill Pardy her childhood crush who attempts to reassure and comfort her while not acting on his feelings. ........

Source: Wikipedia