Chapter 11, Dozmary Mine, and Chapter 12, Behind the Door Summary

In Chapter 11, Alex goes into Port Tallon and visits the library because Sayle told him Ian Rider spent some time there. A discussion with the librarian helps Alex establish that his uncle had been looking for books on viruses and books that contained some of the local history of the area. As Alex begins to leave, he realizes that the number on the shelf of local history books is similar to the beginning of the number on the paper Ian Rider left in his bedroom. Alex goes to the shelf and takes the book that fits the number, a book on the history of a local tin mine, the Dozmary Mine. In the book, Alex finds a map that, when the drawing on Ian's paper is laid over the...