Detective Galileo:

• THE DEVOTION OF SUSPECT X (2011)
• SALVATION OF A SAINT (2012)
• A MIDSUMMER'S EQUATION (2016)

Police Detective Kaga:

• MALICE (2014)

Other Novels:

• NAOKO (2004)
• JOURNEY UNDER THE MIDNIGHT SUN (2015)
• THE NAME OF THE GAME IS KIDNAPPING (2017)