Season 7. After the disappearance of Viktor Baskov, one of Isaak's top subordinates and his lover, Isaak travels to Miami, accompanied by his bodyguard and right-hand man, Jurg Yeliashkevych, in order to investigate Viktor's vanishing. Upon realizing that Viktor was killed, he sets out to avenge him. His trail leads him to Dexter's boat, the Slice of Life, which Louis Greene was trying to sabotage. Louis tells Isaak that the boat belongs to Dexter Morgan, after which Isaak shoots him. Isaak begins to hunt Dexter, but Dexter becomes wise to it very quickly, and lures him into a bar owned by the Koshka Brotherhood's Colombian rivals, the Rojas Cartel. Three armed Colombians attack Isaak, but Isaak disposes of them. The evidence leads to Isaak being brought in by Miami Metro and later incarcerated. Isaak is later released from prison after Joey Quinn, blackmailed by George Novikov, disposes of the DNA evidence linking Sirko to the murder of the three Colombians. Isaak continues to pursue Dexter, which begins to get in the way of the brotherhood's more profitable operations. George sends a hitman after Isaak, who is disposed of by Dexter. Now aware that he is no longer welcome in the Koshka Brotherhood, Isaak begins operating alone (with Jurg as his sole aide), with his only purpose left in life being to kill Dexter. Two of the Koshka Brotherhood's top hitmen, Oleg Mickic and Benjamin Caffrey, are sent to Miami to kill Isaak. Isaak decides to enlist Dexter's help in killing them, ensuring his cooperation by kidnapping his girlfriend, Hannah McKay. Dexter eliminates Mickic at a shooting range. After a shootout with Caffrey on a freighter, Isaak is cornered by George Novikov, who shoots Isaak in the gut, but flees at the sight of Dexter. Knowing that his wound is fatal, Isaak asks Dexter to dispose of him in the same place where he disposed of Viktor's body. On the way to Isaak's final resting spot, Isaak and Dexter discuss how Dexter felt like he had no control over his life since he met Hannah. Isaak states that he felt the same way, detached from society and forced to hide a secret, until he met Viktor. With his final breath, Isaak tells Dexter that there is still hope for him. Viktor Baskov Enver Gjokaj Viktor Baskov was a member of the Koshka Brotherhood and the head of their operations in America.