So there’s a “Green Man” killer stalking the Plains in one of the great disasters in American history. “Slender Man” meets Ken Burns’ worst documentary nightmare.

A mother tries to protect her children from the fatal choice to move to the prairie as it’s blowing away, and a monster is now on the loose.

Odd time for Searchlight to to get into the horror game, I must say. The horror audience has drifted off, for reasons not wholly understood. Which is why “Hold Your Breath” comes to Hulu Oct. 3.