Feudal Japan

In the wake of a terrifying earthquake, Sano Ichiro races to solve a crime that could bring down the shogun's regime. When a massive earthquake devastates Japan in 1703, even the shogun's carefully regulated court is left teetering on the brink of chaos. This is no time for a murder investigation - except when a nobleman's daughters are found dead from incense poisoning and their father threatens to topple the regime unless Sano Ichiro tracks down the killer.

Japan, 1709. Amid the ever-treacherous intrigue in the court, Sano Ichiro has been demoted from chamberlain to a lowly patrol guard. His relationship with his wife Reiko is in tatters, and a bizarre new alliance between his two enemies Yanagisawa and Lord Ienobu has left him puzzled and wary. Then a harrowing, almost inconceivable crime takes place. In his own palace, the shogun is stabbed with a fan made of painted silk with sharp-pointed iron ribs.