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