Possible Clues:

• Assassin reportedly implicated in an injury
• Japanese stealthy spy
• Stealthy Easterner
• Women in Japan hosting local warrior
• Fighter held by captain in Jaws
• Assassin of old Japan
• Masked assassin is somewhat forlorn in jail
• Secret agent hired by a samurai warrior, maybe
• Medieval Japanese assassin
• "American ___ Warrior"