Sherlock Holmes is in front of the chapel, on a warm winter day. There is rain that falls from the sky, melting the frost on the tree. Sherlock is looking for the priceless lost glass eye of one of the priests, which was stolen from him while he was praying. Suddenly it falls from the frost-laden tree, and Sherlock picks it up. The eye was somehow stuck in the frost... now Sherlock must find out why that is the case.