Rain Storm by Barry Eisler

This was really fun, lots of back story about John Rain and how he meets Delilah and befriends Dox. This was the third book on the series, hope to read them all. PW: John Rain has fled to Brazil to clear his killing conscience. But his talents are still in demand. The assignment: take out an arms dealer in Southeast Asia. The upside: strictly finanical. The downside: crossing the path of an Israeli spy equipped with her own unique talents - for seduction, betrayal, and life-and-death games more sinister than any that Rain has encountered before....