Tuesday, October 28, 2025

Only Murders in the Building Season 5 Ending Explained: Who Killed Lester and Who’s the Next Victim?

 Note: This story includes spoilers from "Only Murders in the Building" Season 5, Episode 10.


"Only Murders in the Building" solved its latest mystery and set up an exciting new adventure for a possible Season 6.


In Episode 10, titled "The House Always…," Mabel (Selena Gomez), Charles (Steve Martin), and Oliver (Martin Short) went on one final wild adventure to a secret underground casino at the Arconia to solve Lester's murder.

This led to a big uncovering of corruption, some emotional moments, and a new murder.

 Here's everything you need to know about the Season 5 finale.

Teddy Coluca in "Only Murders in the Building."

 (Disney/Patrick Harbron)

Who Killed Lester?

Season 5 centered around finding out who killed Lester, the Arconia's beloved doorman (played by Teddy Coluca).

 The trio found out the murder was linked to a secret plan to turn the building into New York City's first casino. This plan was part of a feud between three billionaires: Bash Steed (Christoph Waltz), Camilla White (Renée Zellweger), and Jay Pflug (Logan Lerman), which started when a severed finger was found in Oliver's apartment.


In Episode 9, it was revealed that Lester had killed Nicky Caccimello (Bobby Cannavale).

 But the finale showed that before that, Nicky had been shocked when his wife, Sofia (Tea Leoni), told him she wanted a divorce. Sofia's mother, who was the latest suspect in Lester's murder, said she was helping her daughter by pretending to be guilty. She also said she recognized the severed finger the trio had been holding all season, which belonged to the person Sofia had been cheating with.


This led the three back to the billionaires, who were the main suspects.

 After checking, none of them were missing a finger. Mabel realized the only person left was Mayor Beau Tillman (Keegan-Michael Key). He was Sofia’s lover and Lester’s killer. He admitted he had always been the person who made deals for the billionaires. On the night of the murder, things got chaotic when Nicky confronted Beau about the affair.


In the chaos, Nicky accidentally died by Lester's hand.

 Lester tried to tell the trio about the killer from the start, but his message got messed up because of a shaky autocorrect.

Saving the Arconia

As the mystery came to a close, the trio had to deal with leaving the Arconia.

 The finale revealed that not only was the building going to be turned into a casino, but it was also going to be completely torn down so construction could begin from scratch.


Once Mayor Beau admitted he was the killer, he used his corrupt police force to trap the trio in a secret room so they could die when the building collapsed.

 But Howard (Michael Cyril Creighton) found out about the plan and, along with pop star Althea (Beanie Feldstein), made a distraction to save his friends.


Just as Howard arrived, Charles, Mabel, and Oliver freed themselves and publicly exposed Beau's crimes.

 They had recorded everything, which led to his arrest. Jay then admitted that he and the other billionaires had moved Nicky's body and covered up the crime. He confessed to the police, which helped save the Arconia from being destroyed and landed all three of them in jail.


Who Is the Next Victim(s)?

As usual, the finale set up the trio's next case.

After the arrests, Sofia came to the building to tell Charles she had feelings for him.

 She also invited him to Positano with her to start a new life. But for the first time, Charles said no to a dangerous woman.

The show then fast-forwarded three months to find Lester's wife, Lorraine (Dianne Wiest), at her new apartment in the Arconia.

 She had just received a big cash reward from Sofia, a payoff from her investment in a local theater.

At the same time, Sofia was saying goodbye to her mother in Positano, who was on her deathbed.


Back in New York, viewers learned that Howard found love (finally) with one of Sofia's sons.

 The trio also came together to listen to a new murder podcast set in the U.K. from their old nemesis, Cinda Canning (Tina Fey). The podcast was about a red-haired woman in London who Cinda believed had wrongfully killed a royal. Her narration followed as the woman seemed to collapse on the street.


Turns out, the woman who was the subject of the podcast was actually Cinda Canning herself.

 This makes her the latest victim of a possible Season 6 investigation.


"Only Murders in the Building" Seasons 1-5 are now streaming on Netflix.

 The show has not officially been renewed for Season 6.

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