



Produced by Stephen Hutcheson and the Online Distributed
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                       _A Mystery Story for Boys_




                                 _The_
                              GRAY SHADOW


                                  _By_
                              ROY J. SNELL

                     [Illustration: Publisher logo]


                          The Reilly & Lee Co.
                                Chicago

                             COPYRIGHT 1931
                                   BY
                          THE REILLY & LEE CO.
                        PRINTED IN THE U. S. A.




                                CONTENTS


  CHAPTER                                                           PAGE
  I Here To-day and Away To-morrow                                    11
  II The Mysterious Sentry                                            21
  III A Cold Scent                                                    39
  IV A Mome