When the detail begins rounding up members of the Greek's smuggling ring, they hold off on Vondas, hoping he can lead them to the Greek. When Sobotka is arrested, Vondas suggests that they could broker his loyalty by having a witness against Ziggy change his story. Vondas puts the proposition to Frank through Nick. Frank has already agreed to testify against the Greek's crew but decides to meet with them for Ziggy's sake. The Greek learns of Frank's agreement through his inside man at the FBI, agent Koutris, and has Vondas murder Frank.