"A Hidden Enemy is available in hardcover, paperback and eBook editions. These are the covers of A Hidden Enemy. AHE.jpg|American Edition AHE.back.jpg|A Hidden Enemy (Back) AHE.tw.jpg|Taiwan Edition AHE.de.jpg|German Hardcover Edition AHE.de.audio.jpg|German Audiobook Edition AHE.fl.jpg|Finnish Edition AHE.CZ.jpg|Czech Edition TEC.AHE.png|A Hidden Enemy and The Empty City Box Set AHE.NL.jpg|Dutch Edition TEC.AHE.DF.jpg|Volumes 1, 2, and 3 AHE.ru.jpg|Russian Edition AHE.FR.jpg|French Edition AHE.JP.jpg|Japanese Edition AHE.CZ.jpg|Czech Edition AHE.de.paperback.jpg|Germany Paperback Edition"@en . . . . "A Hidden Enemy/Gallery"@en . . "A Hidden Enemy is available in hardcover, paperback and eBook editions. These are the covers of A Hidden Enemy. AHE.jpg|American Edition AHE.back.jpg|A Hidden Enemy (Back) AHE.tw.jpg|Taiwan Edition AHE.de.jpg|German Hardcover Edition AHE.de.audio.jpg|German Audiobook Edition AHE.fl.jpg|Finnish Edition AHE.CZ.jpg|Czech Edition TEC.AHE.png|A Hidden Enemy and The Empty City Box Set AHE.NL.jpg|Dutch Edition TEC.AHE.DF.jpg|Volumes 1, 2, and 3 AHE.ru.jpg|Russian Edition AHE.FR.jpg|French Edition AHE.JP.jpg|Japanese Edition AHE.CZ.jpg|Czech Edition AHE.de.paperback.jpg|Germany Paperback Edition"@en . . . . .