A faceless storyteller relates three tales of terror: 1) An ancient evil necklace gradually takes possession of a man’s soul in “Satan’s Necklace;” 2) A guy goes off the deep end after discovering his wife’s infidelity in “Sliced in Cold Blood;” and 3) A man becomes so obsessed with a video game that he can’t stop playing it to the point that he eventually gets pulled into said game for real in “Level 21.”