A possible summary is:
The text is a transcript of a crime drama about a gang war and a mysterious killer who is also a diabetic. A detective with a heightened sense of smell tries to solve the case with the help of a doctor who he falls in love with. He also has a past connection with Mustafa, the leader of the Thieves in Law, who asks him to find the rat among his men. The detective discovers that the killer is Jagged, the second in command of Sour, another gang boss who wants to take over the businesses of the other factions. The detective exposes them at a sit down and arrests Mustafa. The doctor breaks up with the detective, claiming that he was only an experiment for her.
Here are the key facts extracted from the text:
1. The text is a transcript of a TV show about a gang war and a murder investigation.
2. The main characters are Mustafa, the leader of the Thieves in Law, Sour, his associate and the killer of Misha Kievsky and Trefa, two rival gangsters, and Oleg, a detective who can smell things others can't.
3. Mustafa hires Oleg to find the killer among his gang members and invites him to a sit down.
4. Oleg identifies Sour as the killer by his smell of insulin and LM cigarettes.
5. Sour tries to kill Mustafa and his allies, but fails and gets arrested by the police.
6. Oleg has a romantic relationship with Tatyana, a doctor who treats his ear injury, but breaks up with her when he suspects she is using him for an experiment.
7. Oleg also has a past connection with Mustafa and Seva Kazansky, another gangster who was poisoned two years ago.