"The Visit" is a great return to form for Shyamalan, who was being hailed as the new Hitchcock-meets-Spielberg after his early run of classics ("The Sixth Sense," "Unbreakable," "Signs") before he tumbled into one of the worst career losing streaks in modern times. The movie constantly keeps viewers on the edge of their seats, wondering if the kids are in danger, then how much danger, then how the kids will get out of that danger.
The only real problem with the movie is in its climax, which is hidden within the spoiler alert above. Here, the kids are in so much peril and are forced to find such unpleasant ways out of danger, that the movie almost loses viewer sympathy before coming back strongly with its aftermath.
The fact that the movie has sparse foul language, implies most of its violence, and has no sex – though the rear nudity shown from Nana in her deranged state is a momentary shock that's also played for awkward laughs – means that any adult can enjoy this without much caution and older teens will love it too. In fact, having older teens see a truly masterful horror thriller like "The Visit" might inspire them to check out other smartly done thrillers from masters like Hitchcock and elevate their movie interests from much of the schlock perpeatrated in the name of thrills these days.
It also has a beautiful denouement in which the kids' mother comes to terms with the sad end she had to her relationship with her parents 15 years before, and inspires the filmmaking daughter to also forgive her own heartache with a family member. This message of family and forgiveness is a powerful and valuable asset to the movie, making "The Visit" well worth a visit in the theater on scary, funny and touching levels.