Plot hole: When in the woods, Mari's friend asks to put her clothes on. The man says that its OK, yet Mari puts on her clothes too, even though the man said that only the other girl could.
The Last House on the Left (1972)
1 plot hole - chronological order
Directed by: Wes Craven
Starring: David Hess, Fred J. Lincoln, Lucy Grantham, Sandra Peabody
Revealing mistake: When the killers first pull out Phyllis's severed arm to show Mari, the fingers are moving.
Krug Stillo: Leave Sadie alone, you little toad, or I'll bust your butt with a lily pad.
Answer: She leaves him to bleed to death, which, without prompt medical attention, he surely will.