"Originally published in Great Britain in 2010 by Bloomsbury Publishing"--Verso of t.p First U.S. ed.: New York : Simon & Schuster Books for Young Readers, 2011
Summary:
When missing agent Otto is suspected of leading the mysterious attacks on the leaders of the world's villainous forces, Raven and Wing race against time to find him before other G.L.O.V.E. assassins can locate him
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