It is a new series of missions led by Darren Lynn Bousman, who presented us with SAW II, Saw III and Saw IV. Now, Darren leads her mission when she investigates a haunted house built from the dead rooms.
While Bousman's climax is a not terribly original effects-laden haunted house, the house's builder, and his motives, have enough of their own flavor to please a hardened horror fan.
The inexplicability of "Abattoir" keeps it engaging for a while, but by the time it hits the one-hour mark without anything even remotely exciting happening, even a horror connoisseur's patience will run thin.
A franchise-aspirational horror opus that takes too long establishing its premise, then peters out in a climactic jumble of scare-free digital effects.
If you operate under the belief that you can learn as much, maybe even more, from bad movies as you can from good ones, this one is a master class in what not to do.