I think this is a great intro to World of Darkness for mortals. It has a great horror factor to it featuring an interesting take on the haunted house genre. The characters are trapped in some nightmarish hellscape where ghosts of those who met a tragic end are looking to get revenge on the living. Several optional scenes are included so you can keep players on their toes while they explore.
As they move through the apartment building, they put the pieces together and have to work together to escape. The pregens look good and using them should provide a relatively balanced game. All the necessary rules are briefed here and none of the expanded material is included. This should give your players a taste of NWOD while easing them (and you as a Storyteller if you haven't before) into the system.
Sure, it doesn't get into all the supernatural options for players or adversaries, nor does it touch much on the intricacies of being a Hunter really. It's just normal people in an extraordinary situation. I may even try to adapt this to Fear Itself as it could just as easily be used there. Ok, I'm lazy and everything is laid out and organized here, so I'll go with NWOD.
Just to note, the only reason I didn't give it 5 stars is I feel it is a bit heavy-handed at the end when the full explanation is revealed. I usually prefer clues to slowly add up to the big picture rather than one critical piece of information the explains everything.
[4 of 5 Stars!]