Susan Spann is the award-winning author of the Hiro Hattori mystery novels, featuring ninja detective Hiro Hattori and Portuguese Jesuit Father Mateo.


Check out my published works and find out about what’s coming next!

The Ninja Blog

Join me as I blog about Japan, my books, my travels, and all the things I see along the way!

Praise for the Hiro Hattori Novels

Spann keeps getting better . . . a taut closed-circle mystery with perilous consequences. Fans of classic whodunits will be pleased. 

Publisher's Weekly
July, 2017 Publisher's Weekly review of BETRAYAL AT IGA
Publisher's Weekly

Spann once more shows herself as a master storyteller. A nail-biting tale of ninja assassins and a man who must choose between honor and his family in feudal Japan.

Cara Black
New York Times–bestselling author of the Aimée Leduc Investigations
Cara Black

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