Carl Miller once gave a speeding ticket to Tretiak, which enraged him. This, and the fact that the police had captured Kozodav, convinced Tretiak to get revenge against the police. He and Antwon Mitchell then hatched a plan to do it.
With Jason Porter as an intermediary, Tretiak agreed to use two Nigerian hitmen brought by Antwon Mitchell to kill Officers Wayne Haimes and Carl Miller. Porter also brought Tretiak language tapes, which he kept in his office. After the cops were murdered, the Strike Team tracked down Tretiak and saw him beating a prostitute. They broke into his office and saw invoices for shipments at a warehouse. When they went there, Tretiak was with some associates testing some C-4.
The Strike Team then planned to arrest him, but he wasn't at the warehouse at the time of the bust. Vic Mackey then sent Ronnie and Lem to pick him up at his restaurant together with his lieutenant and the prostitute. They then took him to one of his warehouses, where Irina hit him in rage for all the beatings. Vic had Ronnie tie Tretiak to a chair and rig him with some C-4. While they questioned his associate, Tretiak shook his chair and fell, triggering the C-4. The explosion killed him.