Only Murders in the Building season 4 finale explained: Who killed Sazz?

Sazz's murderer was identified and handled in the Only Murders in the Building season 4 finale. On top of that, the series set up its murder investigation for season 5.
ONLY MURDERS IN THE BUILDING - “Escape From Planet Klongo” - Seeking a critical clue, Charles, Oliver & Mabel must infiltrate a film set to get the real "background" on why Sazz was killed. SELENA GOMEZ, STEVE MARTIN, MARTIN SHORT
ONLY MURDERS IN THE BUILDING - “Escape From Planet Klongo” - Seeking a critical clue, Charles, Oliver & Mabel must infiltrate a film set to get the real "background" on why Sazz was killed. SELENA GOMEZ, STEVE MARTIN, MARTIN SHORT /
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This season was not an easy one for Charles. He had to say goodbye to a dear friend while also investigating her murder. In true Only Murders in the Building form, the investigation came to a shocking end in the finale, and it pushed us into the next season.

Caution: This post contains SPOILERS for Only Murders in the Building season 4 finale.

The episode picked up with the big reveal that Marshall P. Pope, played by Jin Ha, was the murderer. He had been her stunt protegee, but things turned sour when Sazz wrote the original script for the Only Murders movie.

As Mabel found the script, Oliver and Charles raced to save her from her Westie apartment. Would they get there in time?

What happened to Marshall in Only Murders in the Building season 4?

As Charles and Oliver raced to save Mabel, it was Jan who ended up saving the day. She got revenge for Sazz’s murder, shotting Marshall from Charles’s apartment. It turned out that Jan had been hiding in the walls of the Arconia and in Charles’s closet the whole time. All she wanted was revenge, and we can’t really blame her even if we don’t like her!

With the death of Marshall, the movie could go on. It happened with Sazz’s original script, making for a tearful but beautiful ending.

Setting up Only Murders in the Building season 5

Of course, the show can’t just end with a big reveal. Every season has brought us another murder for the podcasting trio to solve. Well, season 4 is no different.

Oliver and Loretta’s wedding didn’t quite go off without a hitch. Sure, initially there was a beautiful ceremony, but it ended with Loretta finding out that her next big gig would take her on New Zealand and the finding of a dead body.

Whose murder will the trio need to solve this time? It’s the beloved doorman Lester, who was found dead and bloody in the water fountain. We were introduced to the Caccimelos at the end of the season as Sofia went looking for her husband Nicky, but were they involved in the murder? Now we need season 5 to find out.

Only Murders in the Building is available to stream on Hulu.

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