Susan Spann

Mystery Author

The latest entry in the thrilling 16th century Japanese mystery series, featuring ninja detective Hiro Hattori and Portuguese Jesuit Father Mateo!

“Spann once more shows herself as a master storyteller.”–CARA BLACK, New York Times bestselling author of the Aimée Leduc Investigations.

Available Now!


Betrayal at Iga

Autumn, 1565: After fleeing Kyoto, master ninja Hiro Hattori and Portuguese Jesuit Father Mateo take refuge with Hiro’s ninja clan in the mountains of Iga province.

But when an ambassador from the rival Koga clan is murdered during peace negotiations, Hiro and Father Mateo must find the killer in time to prevent a war between the ninja clans.

With every suspect a trained assassin, and the evidence incriminating not only Hiro’s commander, the infamous ninja Hattori Hanzo, but also Hiro’s mother and his former lover, the detectives must struggle to find the truth in a village where deceit is a cultivated art. As tensions rise, the killer strikes again, and Hiro finds himself forced to choose between his family and his honor.

Click to Learn More!

  • On the Road…to Bouchercon!

    This morning, I’m flying to Los Angeles to pick up my mother, and tomorrow she and I fly to Toronto, Canada for Bouchercon (the World Mystery Convention).

    On Friday at 2pm, I’m speaking on a panel about mysteries set in foreign times and places. After that, I’m looking forward to spending a lovely long weekend with my brothers and sisters in crime-fiction – writers and readers!

    16j23-airplane-window

    This will be my mother’s first Bouchercon – and I’m excited to share it with her. She loves a good party, and the world mystery convention is tremendous fun.

    My regular Japan posts are on hiatus this week, for Bouchercon, but I’ll still be posting updates from the convention, and regular blogging will resume on Wednesday, October 18!