Secret War : Spies, Codes and Guerrillas 1, Paperback by Hastings, Max, ISBN 0007503903, ISBN-13 9780007503902, Like New Used, Free shipping in the US

'As gripping as any spy thriller, Hastings's achievement is especially impressive, for he has produced the best single volume yet written on the subject' Sunday Times 'Authoritative, exciting and notably well written' Daily Telegraph 'A serious work of rigourous and comprehensive history ... royally entertaining and readable' Mail on Sunday