In this week’s Merlin, Morgana has kidnapped Gaius because she believes he knows the whereabouts of Emrys. When Merlin goes searching to find Gaius, Morgana corners him in the cave and threatens to kill him. Little does she know that she already has Emrys trapped. Will Merlin be able to escape with his secret intact? Tune in Friday at 10/9c to find out.