With many new clues to follow, they head to the east coast to take a closer look at rock engravings that can provide more answers. They meet the historian Sturla Ellingvåg who takes them on a boat trip.

They finally get to see the famous Maine Penny, and the visit to the Maine State Museum opens their eyes to new opportunities. Afterwards, they meet the anthropologist Harald Prins.

After an intense search for more tangible evidence, Peter and Elroy choose to go in a different direction with the investigation. Each object leads them deeper into a web of mysterious symbols and conspiracies.