A pretty standard b-movie of the era, but surrounded by some of the most amazing freak-out dream sequences; dense fog, skeletons, melting people, effects shots, eyeballs poppin' out, people reaching towards the screen of course... I was in five-star territory every time the movie told me to PUT ON THE MASK!!!!!!!!!!!!!
The rest of the movie? Shrug, it is what it is. That stuff is interesting in-so-far as it adheres to what you would expect from an early 60s b-movie cop procedural (but from Canada!)
Eventually builds to some interesting mask-as-drug-addiction stuff, but it's not quite enough to elevate outside of the 3D scenes. Still, those scenes rule so hard.