Alice sees a vehicle pull up; thinking its Steve, she rushes out but sees a middle-aged woman named Pamela Voorhees, an "old friend" of Christy's. As Alice tries her news, Pamela reveals herself the mother of the drowned boy - Jason, blaming his death on the counselors having sex. She reveals herself the killer when she violently rushes toward Alice with her knife. A chase ensues with Mrs. Vorhees attempting to kill Alice, but she escapes to the shore. Just as she eases, Pamela attempts to kill her again. During the final struggle, Alice decapitates her with a machete.
Afterwards, a shaken Alice boards and falls asleep inside a canoe and floats to Crystal Lake's middle. Just as Alice sees police arriving, a decomposing body drags her underwater. She then awakens in a hospital screaming. A police officer tells her the aftermath. When she asks about Jason, the officer replies with no evidence of any boy; Alice says "He's still there". The film ends with a peaceful shot of Crystal Lake.