After the Doctor is attacked by a group of mysterious gunmen, he discovers he is the physical double of the famous scientist Salamander. Jamie and Victoria agree to accompany Astrid to Hungary to observe Salamander's activities. Jamie and Victoria join Astrid into attempting to rescue Denes but Salamander becomes suspicious of them. Fariah brings the Doctor and Kent evidence of Salamander's activities but then they come under attack from Benik. The Doctor persuades Bruce to help him infiltrate Salamander's research centre while Salamander takes drastic action to prevent Swann finding out the truth. The Doctor discovers the true link between Salamander and Kent while Astrid tries to convince the shelter inhabitants they have been lied to.