2x6 - Smallville: Chloe Chronicles

Pete and Chloe hike through Burnham Woods in search of Sheriff Waid's crater pond. They are being followed. After more than an hour, Pete gets bored and heads off on his own. Chloe catches up with him at the pond but after just a few minutes, he disappears again. Suddenly, someone grabs Chloe, throws her to the ground and takes her camera.