A Nightmare on Elm Street 5: The Dream Child (1989)

Continuing the plot several months on from part 4, we are re-introduced to the sole surivivors from that film, Alice and her boyfriend Dan. This time Freddy is ressurected through the dreams of Alice's unborn baby after she finds she's pregnant. However, before Alice and Dan can settle down to domestic bliss together. Freddy decides to bump him off. Having turned Alice into a single parent, Freddy then proceeds to move onto all their new chums. We're then given the usual tirade of teenage cast members starting to doze off, before suddenly snapping awake again, only to realise they're actually asleep then after a quick scuffle with Freddy, getting killed. The mysterious Nun from part 3 returns, who we all now know is Freddy's mother, except that she's looking a damnsight younger now. She comes back to help alice defeat Freddy, which they finally do in the usual unfathomable manner at the films climax, which is set in the old tower at the mental institution from part 3. Except the whole building now appears to have been empty and abandoned for years.