The man behind Old, Split, and The Sixth Sense returns with an intriguing but underbaked end-of-the-world thriller.
What fresh apocalypse is this?
(Youget a plague!Youget a plague!)

Dave Bautista, Abby Quinn, and Nikki Amuka-Bird in ‘Knock at the Cabin’.Universal Pictures
But Armageddon, of course, is a bell that filmmakerM.
Night Shyamalanhas famously been ringing for more than two decades now.
Surely Shyamalan, notorious twist-lord of the modern multiplex, has a deeper plan for this.
Eric and Andrew, understandably, object to this plan.
That’s whereKnockbegins to cleave away from the novel and perhapsthe Black-Listed screenplay, which Shyamalan reportedly rewrote.
but it makes for frustratingly obtuse filmmaking when so many integral plot points are left by the wayside.