TO
MY MOTHER
WHOSE UNFLAGGING INTEREST HAS
STIMULATED MY LITERARY WORK, THIS
LATEST BOOK IS LOVINGLY INSCRIBED.

CONTENTS

CHAPTER   PAGE
I Through the Portières 1
II Identified 6
III Theories 23
IV Lost: A Memorandum 41
V More Theories 57
VI Speculation 77
VII The Knave of Hearts 94
VIII Pro and Con 113
IX Half a Sheet 123
X Below Stairs 140
XI The Threat 153
XII The Theft 169
XIII “Mizpah” 182
XIV Suspicion 193
XV The Push Button 209
XVI Links in the Chain 225
XVII The Dancing Silhouettes 242
XVIII Edged Tools 252
XIX The Unseen Ear 270
XX Run to Cover 279