Why haunted houses are Hollywood's next big thing

It's late at night, and I'm standing with seven other people on a loading dock in downtown Los Angeles. We're masked, our faces hidden by bandanas that bear a single word: CREEP. A nearby door opens, and we walk single file into a darkened room. There, an empty chair waits, and a timer tick-tick-ticks the moments away. Crumpled balls of paper are piled against the wall, and when I reach down to unfold one, I discover a portentous warning: Your wife may not be who she seems. That was the first fe...