New York Dodd, Mead and Company 1917

By

Author of "The Chase of the Golden Plate," "The Haunted Bell," etc.

Copyright, 1905-1906, by American-Journal-Examiner
(Copyright, 1907, by Dodd, Mead & Co.
Under the title of "The Thinking Machine")

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By courtesy of William Randolph Hearst

To
those two persons who made The Thinking Machine possible

J. L. E.,

who opened the way, and

L. M. F.,

who guided, advised and encouraged the hand that labored,

these tales are gratefully dedicated.

CONTENTS

The Problem of Cell 13.

The Scarlet Thread.

The Man Who Was Lost

The Great Auto Mystery

The Flaming Phantom

The Ralston Bank Burglary

The Mystery of a Studio.