Roll up! Roll up! To the great Viennese Exposition, where showman Stahlbaum will show you his most wonderful creation, the Silver Turk. But when the Doctor brings his new travelling companion Mary Shelley to nineteenth-century Vienna, he soon identifies the incredible Turk as one of his deadliest enemies - a part-machine Cyberman.
This book is part of the Doctor Who: Big Finish Monthly Adventures Audio Books series and is book #54 in the series.