After the events of the Summer it was decided to wait until all wounds had healed before returning to confront the ghosts and horror of the island. While Lucius and Janus were recovering from there wounds Byron quizzed Gregory about where he had gained his knowledge of the lost Covenant, and Gregory revealed he had purchased a book in Paris which purported to be a journal of Uffius, leader of the earlier covenant, which detailed the vis sources and history of the covenant until the eve of it's downfall. Byron examined the book and took notes on the vis sources claimed by the covenant.

Gregory's plan was to reestablish the covenant and then reveal it's existence at the 1215 Stonehenge Tribunal, establishing rights to former vis sources and continued existence by the very fact that the covenant had already existed before and was simply being revived...

One of the vis sources spoken of in the book was a rich source of vis to be found at an ancient flint mine named Grimes Graves near Brandon. It was decided that the magi would visit it on the appropriate night on their way back to the covenant. Uffius' book warned of great danger, so they prepared carefully...