This article contains spoilers for Only Murders in the Building season 4, episode 6, “Blow-Up.“Only Murders in the Buildingshowrunner John Hoffman talks about the big twist in season 4, episode 6, which points towho Sazz’s killer might be. Episode 6 begins with Oliver surviving a shooting targeted at him, with the trio realizing that their lives are at risk. After initially suspecting the Brothers sisters as the killers, Mabel concludes that the filmmakers' mentor in college,Professor Dudenoff, was the second victim of Sazz’s killer.
In an interview withTheWrap, Hoffman revealed that episode 6’s “big twist” iscrucial to solving Sazz’s murder mystery, following the breadcrumbs in episode 4, where they “drop an understanding of who” Dudenoff is. The episoderevealed his connection with the Brothers sisters and those in the West Tower and how they are all tied to the murder.Episode 6 was also a combination of the showrunner’s favorite moments. Read his full response below:

“It was a big twist and we wanted to lay the seeds of who this person is. In Episode 4, we drop an understanding of who that person is and then in Episode 6, you see him and make the connection between the Brothers Sisters and the group in the West Tower. You’re putting it together that ‘Oh, my God, they all took this class from the same person,’ and now they’re all tied into this mystery that we’ve set up that’s very tied into what happened to Sazz because of the apartment that this man was in. So all of that felt really interesting, combined with one of my favorite moments: the end of episode one and this stark turn into a darker undertone of reality, of what happened to Charles’ beloved friend. So there’s stuff left in there to be discovered.”
What John Hoffman’s Breakdown Means for Sazz’s Killer?
It Answers Some Questions
Only Murders in the Buildingis slowly revealing the real mystery behind Sazz’s murder. While the trio suspected that Charles was the true target, and Sazz “tapped in” for him, episode 6 clarified thatSazz was the target all along. The revelation of Professor Dudenoff being another victim also seems to answer some burning questions, including why Sazz was looking into him. It could be thatDudenoff was the first victimand Sazz was investigating his murder, which led her to get killed.
Only Murders In The Building’s Westies Explained: Who They Are & What It Means For Season 4
Only Murders in the Building season 4 has introduced a new group, referred to as the Westies, who are connected to the season’s central mystery.
Withthe Brothers sisters and the group of the West Tower all tied to Professor Dudenoff’s class,Only Murders in the Buildingis pointing toward the class being a crucial clue. The question of why Dudenoff was killed will be at the core of solving the season 4 mystery. On the other hand, the series has a track record of “tricking” viewers with a very convincing note. Episode 5 seemingly pointed to the Brothers sisters being the murderers, but now, it’s very unlikely for the show to solve the case any time before the season finale.

Our Take On the Only Murders in the Building’s Mystery
It Has Little to Do With What We Think We Know
The episode opening reveals that Paul Rudd’s Bene Glenroy stunt double, Glen Stubbins, was shot, and Oliver’s stunt double, Zach Galifianakis, was injured in the process. With Sazz, Charles' stunt double, being the first victim in season 4, there seems to be a general pattern thatthe killer is aiming for stunt doubles.
With the professor being the key Only Murders in the Building character, the killer is likely either Dudenoff’s past student or someone who worked very closely with the professor.

Season 4’s mystery centers around Dudenoff. With him being dead all along, the series has sent the trio in a whole new direction away from themselves and into what connects Dudenoff with every single kill. We know Sazz has Dudenoff’s number on a piece of paper and the code to open his apartment, buther connection to Dudenoff is still left to explore. With the professor being the keyOnly Murders in the Buildingcharacter, the killer is likely either Dudenoff’s past student or someone who worked very closely with the professor.