Precious Smell of Death

An undercover cop was executed on the banks of river Alz in Bavaria. Leo Schwartz and his colleagues of Mühldorf Police department are searching for the killer. During their investigations, they stumble upon Agarwood, which is the most valuable wood in the world, more expensive than gold, and with a significant smell.
The traces lead the cops to Florence Italy. Will they find the killer there?
They find out much more. ..