All of Eisler's novels feature John Rain, a Japanese-American "struggling with his own divided nature: Japanese / American; soldier / assassin; samurai / ronin." Rain, as written by Eisler is "a remarkable creation, a multifaceted killer with the soul of a poet."
Eisler's first book, Rain Fall, put him on my favorite author's list. His second, Hard Rain, proved that the first book wasn't a fluke. Rain Storm cements Eisler's place as one of the best series writers working. Don't take my word for it, check out what EVERYONE is saying.
Yeah, Eisler's that good. [So is John Rain, for that matter!]