The book I'm reading now is Left to Die. Adele Sharp is with the FBI in the stated, but she speaks French, German and English and has the same citizenships in each country. She's on the trail of a killer who incapacitates his prey with a paralytic injection and then cuts....between fingers and toes, watching them bleed out, while conscious and paralyzed. He's killed several in the US and then is asked to go to France because he fled the US and has killed in France.
Love All Life; Thank You For Posting! :)