Download or read book Mask of Treachery written by John Costello and published by Grand Central Pub. This book was released on 1990-01-01 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Picking up where the million-copy bestselling Spycatcher left off, here is the first book to use newly declassified documents to expose the shocking double lives of the most notorious Soviet spies of the postwar era--the Cambridge spy ring.