What Lies Beneath
Claire has a talk with Sean, who cannot remember her or anything about his past; Wes goes back to Mali for another look at the fulgurite; Lena tries to ensure that Minx's conversations with Drill cease.
When children across Washington, D.C., all start talking with the same imaginary friend named Drill, who persuades them to play dangerous games, the FBI calls in child specialist Claire Bennigan -- whose deaf son has been speaking to Drill, unbeknownst to her -- to investigate. Meanwhile, the defense department sends Wes Lawrence to the Sahara Desert, where he encounters a strange geological phenomenon. As puzzle pieces come together, creating a frightening picture, humanity must wage a battle against unseen forces if it hopes to survive.