The Last Layer

Senior Inspector Gerard de Rochenoir of
the elite French National Police is attempting to solve two
daring jewelry robberies in the heart of Paris when one of
the victims turns up murdered. Gerard's investigation
takes him to the glamorous Caribbean island of St. Barth
where he crosses paths with Sofia Mostov, a striking jeweler
with a mysterious past and a possible link to the crimes.
While Gerard keeps a suspicious eye on Mostov, he meets
Catherine York, an attractive American insurance executive
twenty years his junior, who happens to be investigating the
same two Paris robberies as well as others that may be
related. When Pierre Abou, a Sherlock Holmes obsessed cop,
makes a stunning discovery at a farmhouse on the Brittany
coast, the mystery begins to unravel and leads Gerard and
Catherine around the world and straight to another murder.
As this unlikely couple becomes intertwined in the
complexities of a passionate relationship, they soon
discover that Sofia Mostov is not only mysterious and
beautiful, but also very dangerous.