Francis Worcester Doughty

“ I knew it must be the same one, and belonging to the same person, for the hand was raised, and the index finger shaking.
Determined that this shadow should not disappear so suddenly and mysteriously again, I kept my eyes on it as I hastily sprang forward.
The shadow moved, and its owner suddenly stood before me—a lithe figure, in male attire, with a large-peaked cap.
I glanced keenly at the face.
It was a boyish-looking face, with eyes very deep-set, it seemed to me, and a face, besides, that lacked expression.
"Shadow!" ”

“ Shadow's hand was resting on the table. Without even glancing up to see if I was looking, his index finger began forming letters on the table—letters, of course, that were invisible.
My eyes followed the finger carefully, and I read the words:
"Fool! Your folly may cost us both our lives. I am Shadow—nothing else. Do not seek to penetrate my disguise. Go." ”

“ First of all, he paid a visit to police head-quarters, and described the man who had been seen with Helen, as the boy had described him.
From one detective to another he went, giving the description, and inquiring if any could say who tallied in appearance with it.
Among the others he came to me, but, like the others, I could not even guess who the person might be, so meager was the description.
I asked him if he intended turning detective himself.
"I do," he firmly said; "and I shall never give up until I have found her, and unearthed the rascal who has done this." ”