"The fog's gone in here," I said. "It was marine fog. It doesn't penetrate the forest." "Yeah," Corey said. "I'm thinking the fog's not such a problem. It's very...dark. We don't know what's in there." "Yeah, we do," Sam said. "Bears, cougars, wolves..." "None of which are nocturnal," I said. Actually, they were crepuscular, which meant they were most active at twilight--both dawn and dusk. In others words, right about now. But I wasn't telling these guys that."