Suggest me murder/mystery any books involving a femme fatale and female detective as contrasting characters.

I'm looking for any type of mystery stories involving certain characters. Something along the lines of a sexy/deadly femme fatale type woman that makes the men swoon and a female investigator or a male/female detective partnership dealing with a mystery involving said femme fatale. Just two very different characters that contrast or compare to each other. The story can involve some "adult" moments too.