Written by George E. Rochester
Copyright 1934
A collection of 11 stories originally published in Modern Boy magazine in 1932, #210-220. A subset of the first 8 was contained in the Boy's Friend Library series, #417, February 1934.The stories are:Grey ShadowGrey Shadow’S JokeThe Lathe HandBarbed WireThe Way Of A SpyGrey Shadow’S RaidCapture Of Grey Shadow!The Bust Of Putz!Wings Of The NightThe Master Spy!Grey Shadow On The Run!