Produced by Al Haines.
_*No. 13 Toroni*_
_*A Mystery*_
_By JULIUS REGIS_
NEW YORK
HENRY HOLT AND COMPANY
1922
COPYRIGHT, 1922,
BY
HENRY HOLT AND COMPANY
First printing, October, 1922
PRINTED IN U. S. A.
*CONTENTS*
PART I.
THE MYSTERY OF ELAINE ROBERTSON
CHAPTER
I. STEPS THAT GROW SILENT
II. "DO NOT LET HER ESCAPE"
III. THE GIRL IN GREY
IV. "HE FRIGHTENED ME"
V. THE OTHER DREYEL
VI. THE TRACK OF THE "INVISIBLE" ONE
VII. DOCTOR AUGUSTUS N. CORMAN INTRODUCES HIMSELF
VIII. ONWARD TO THE UNKNOWN