When a Russian entrepreneur, Katz, is mysteriously killed on the edge of a waterfront mansion, the detectives have little to go on.

Tully and Cross investigate the victim's profile and discover that Katz was a ruthless man, his hands dirty with many crimes. Is rebirthing conflict diamonds one of them? And what or who is the local connection?

Charismatic nightclub owner, Ivan Lazar is also from Russia. He says he has no connection with Katz. But is that the truth?

The case becomes personal for Tully and Cross when one of their witnesses is killed and their quest for justice is obstructed. Tully and Cross suspect Lazar is behind it, but can they prove it?