The Savannah Madam by Tom Turner 

From the author of the Palm Beach Mystery Series

The beautiful Farrell sisters are an unlikely duo of gumshoes.

Tired of following cheating husbands to no-tell motels, the two catch a case which could either make their bones or get them killed. Maybe both.

To crack it, the sisters must dive deep into a murky demimonde of crooked cops, low-rent thugs and high-class brothels.

In the middle of it all, Jackie falls for hunky homicide cop, Harry Bull. Harry is from an old Savannah family but… might just have a skeleton or two rattling around in his closet.