The premise - a priest (Donald Pleasence) acquires a key long kept by The Brotherhood of Sleep. It unlocks a door in the basement of an abandoned inner city church. Inside, a strange cylinder of green liquid and book. Consulting a physics teacher friend of his, (Victor Wong), a team is assembled to figure out what these are. Do you find horror movies that mess with the mind more than mere slasher more scary than others?

The church - much of the film is set in an a real church that was not in use at the time. DVD I have states turned into a community outreach center later. In any case, such places are typically safe haven in horror flicks, this is not. Just looking at from outside, would you go into?

Antimatter - is said matter composed of the antiparticles of the corresponding particles in "ordinary" matter, which can be thought of with reversed charge, parity, and time. All that aside, film delves into what if this being called the Anti-Christ if one believes in, or just evil literally something antimatter? This is played out in the film in a very eerie way, cast getting dreams from the future warning them. Notion you could buy into?

Street people - in this case are drawn to the church, keep our cast trapped inside. Rob Zombie (pictured) one of them. While I no issue with such folk, would be pretty darn creeped a group of dozens of them just staring at something. Do you have fear of the homeless / street people?