Earl Derr Biggers,
Inside the Lines
(1915)
“ Hadn't he come all the way down here from Berlin, faithful to his pledge to Louisa, the girl in the Wilhelmstrasse, ready and willing to embark on that important mission of which he was to be told by Doctor Emil Koch? And what happens? Koch turns him into the street like a dog; threatens to have him before the military as a spy if he doesn't make himself scarce. Koch refuses even to admit he'd ever heard of the Wilhelmstrasse. Clever beggar! A jolly keen eye he's got for his own skin ”
