Editions of The Overlord Protocol

Paperback, 320 pages

Published Aug. 20, 2007 by Bloomsbury Publishing PLC.

Hardcover, 384 pages

Published Aug. 20, 2007 by Bloomsbury Publishing PLC.

Paperback

English language

Published May 14, 2011 by Bloomsbury.

384 pages

English language

Published May 14, 2009 by Simon & Schuster Children's Publishing.

384 pages

English language

Published March 13, 2009 by Simon & Schuster Children's Publishing.