| Foreword | 17 |
| The Elusive Phantoms | 23 |
| The Myth | 23 |
| The Art of Ninjitsu | 24 |
| The Decline | 29 |
| Shadows of the Past | 31 |
| The Origins of Ninjitsu | 31 |
| The "Golden Age of Ninjitsu" | 35 |
| The Fabulous Clans | 39 |
| From Espionage to Law Enforcement | 46 |
| Weapons | 49 |
| The Sword and Swordsmanship | 49 |
| Escape Weapons | 60 |
| Assassination Tools | 64 |
| Explosive Weapons | 67 |
| Web of Subterfuge | 69 |
| Water-Crossing Devices | 69 |
| Climbing Devices | 73 |
| The "Human Fly" | 77 |
| The Ninja's Costume | 78 |
| Poisons and Curatives | 83 |
| Poisons | 83 |
| Remedies and Cures | 88 |
| Rations | 90 |
| Physical and Mental Training | 91 |
| Birth of a Ninja | 91 |
| Training Camps | 94 |
| Hand-to-Hand Combat Techniques | 104 |
| The "Spirit" of Ninjitsu | 105 |
| Strategy | 107 |
| Military Ranks | 107 |
| Insight into the Elements | 110 |
| Insight into Man | 111 |
| The Female Ninja Agent | 112 |
| Espionage | 115 |
| Preparatory Tactics | 115 |
| Intelligence and Counterintelligence | 116 |
| Disguises | 119 |
| The Fifth Columnist | 123 |
| Laying the Groundwork before War Breaks Out | 123 |
| Invading Enemy Territory | 124 |
| Infiltrating Enemy Lines during a Battle | 128 |
| Diversionary Tactics | 129 |
| Penetration | 131 |
| Breaking into the Enemy Camp | 131 |
| Erasing of Sound and Shadow | 135 |
| Tricks | 137 |
| Taking Advantage of Superstitions | 137 |
| Imitating the Sounds of Animals | 138 |
| Creating Confusion | 139 |
| The Invisible Man | 141 |
| Hiding | 141 |
| Escaping | 143 |
| The Vanishing Breed of Knights Without Armor | 149 |
| Yoshiaki Hatsumi | 149 |
| Iga-Ueno Museum | 152 |
| The Novelist's Re-creation of the Ninja | 157 |
| Heishichiro Okuse | 159 |
| The Secret of Sasuke Sarutobi | 165 |
| Norihiro Iga-Hakuyusai | 166 |
| Yumio Nawa | 167 |
| A Man for All Seasons | 175 |
| The Legacy | 175 |
| The Modern-Day Budoman | 176 |
| Glossary | 179 |
| Index | 187 |