2015 මැයි · Big Finish Productions · කථනය Lisa Bowerman, Nicholas Briggs, Alexander Vlahos, Chase Masterson, Ciara Janson, Katy Manning, සහ Laura Doddington විසින්
From the streets of Edwardian London to a library in the distant future, a single book holds the key to the fate of life on Earth. This epic story brings together some of Big Finish’s best-loved characters in an adventure spanning thousands of years!