<p>PART I.<br>THE MYSTERY OF ELAINE ROBERTSON<br>CHAPTER<br>"DO NOT LET HER ESCAPE"<br>THE GIRL IN GREY<br>"HE FRIGHTENED ME"<br>STEPS THAT GROW SILENT<br>THE OTHER DREYEL<br>THE TRACK OF THE "INVISIBLE" ONE<br>DOCTOR AUGUSTUS N. CORMAN INTRODUCES HIMSELF<br>ONWARD TO THE UNKNOWN<br>PART II.<br>THE WOODEN DOLLS<br>ELAINE ROBERTSON'S STORY<br>RICARDO FERAIL<br>A "WELCOME" GIFT AT SEATTLE<br>WILLIAM ROBERTSON<br>FERAIL MAKES A PROPOSAL<br>ELAINE'S ...