Murder on the Left Bank - Cara Black

When his nephew is murdered while carrying a notebook exposing dirty cops as money launderers, grief-stricken Eric Besson tries to hire private investigator Aimee Leduc to find the notebook, but she is reluctant to get involved. Her father was a cop and was murdered by the same dirty syndicate the notebook implicates. But she has her own reasons for ultimately taking the case, which leads her across the Left Bank, from the Cambodian enclave of Khmer Rouge refugees to the ancient royal tapestry factories to the modern art galleries.