Like David Cronenberg's The Brood back in the 80's, this new (I use the word loosely) horror (used even looser) toys with the idea of some controversial 'treatment' being tested on patients which results in them literally giving birth to an overwhelming emotional/psychological state, in this case, addiction, which then goes on to kill, kill and kill again. Maybe if the acting, script, direction and pacing had not been so unutterably dreadful, I could give a damn but as it is, the sheer plodding and amateur nature of it all should have Cronenberg dialling his lawyer. There is some impressive photography which is a shame really because all that achieves is to draw further attention to the flaws as we watch a band of no-interest characters stumble upon the creepy, killer results of the aforementioned treatment as they explore the bowels and basements of the gi-normous old rehab facility. If you don't get to see this in the intended 3D, think yourself lucky. It's one less dimension of awfulness that you'll have to endure.