Leopard

Combining the Eastern exoticism of Rising Sun with the gripping serial-killer intensity of The Silence of the Lambs, Leopard is the terrifying sequel to Richard La Plante's acclaimed first thriller Mantis.
Medical examiner Josef Tanaka returns to his native Japan for the first time in fifteen years to learn that his brother has been savagely murdered. To find the killer, he must rediscover his Japanese heritage-and plunge into the mysterious world of ritual tattooing, sumo wrestling, and the Yakuza. But Tanaka faces something even more deadly than gangsters: The Leopard, a remorseless human killing machine, swift, cunning, and unstoppable.
His pursuit of the Leopard leaves Tanaka's relationship with cosmetic surgeon Rachel Saunders in tatters. Yet as Tanaka is drawn within a web of deceit it is only Rachel who intuitively understands the truth.