Detective Murdoch and Constable Crabtree investigates the death of a man found in the river by Inspector Brackenreid while out fishing with his boys. The man had been shot in the forehead by a metal rod shaped like an arrow. A receipt in the dead man's pocket directs them to the town of Markham where the dead man is identified as someone who was searching for a mythical Taj Mahal-like temple that is supposed to exist in the woods somewhere west of town and is guarded by a troll. They locate the temple, quickly identify the murder weapon and learn why local legend calls it the temple of death. Julia, Dr. Grace and their friends meanwhile continue to pursue their political aspirations.