I dare you to try sleeping with the lights off after watching Channel Zero: Candle Cove. After weeks of seeing TV promos and trailers for the new horror anthology series on Syfy, I expected gore and mayhem.After all, there is a monster literally made up of teeth, life-size puppets that are the stuff of nightmares, and creepy children. Instead, what unfolds in the premiere, “You Have to Go Inside,” is a psychological thriller mixed with story elements reminiscent of the Konami horror game Silent Hill 2.