Summary

• Miles is revealed as the killer at the end of Glass Onion, murdering Andi and Duke to protect himself.
• Miles pushed Andi out of their company due to disagreements over their hydrogen cell plans.
• Miles' friends turn against him after realizing he only cared about himself and his reputation.

Glass Onion is all about the big twists revealed at the ending, and how they are explained — here's a breakdown of every Knives Out 2 twist, and the meaning of the Glass Onion ending. Written and directed by Rian Johnson, who helmed the first Knives Out, Glass Onion: A Knives Out Mystery brings back Daniel Craig’s Detective Benoit Blanc to solve another grisly murder. Moving from New England to a lavish island in Greece, Glass Onion introduces a slew of new characters who are attending an exclusive party — any one of whom could be the killer.

Miles Bron (Edward Norton) was surprised to see Daniel Craig's Detective Benoit Blanc because he wasn’t formally invited to attend the murder mystery party, a twist that wasn’t revealed until midway through Glass Onion. The sequel is focused on a group of friends, rather than family, who are still close for reasons that primarily involve money. The murder mystey party quickly takes a turn after Duke is killed, and it’s revealed Cassandra "Andi" Brand, Miles’ ex-business partner, died. Like the titular vegetable, Glass Onion has a lot of layers that are peeled back throughout the film.

How Andi & Duke Really Died (& Who Killed Them)

Miles Killed Both Of His Deceased Guests

Despite "Andi" (Janelle Monáe in the Glass Onion cast) being at the party, audiences learn that she died by apparent suicide days before Miles planned the murder mystery party. The actual attendee is Andi's twin sister Helen, posing as Andi. Before everyone gathered on the island, the tech billionaire had met with Andi, and roofied her drink, before taking her to her car, unconscious, and leaving her in there with the engine running and the garage door closed until she died. It was staged as a suicide so no one would suspect Miles was the culprit.

Despite claiming that he’s always there for his friends, and the majority of his friends standing by his side, Miles is quick to turn against them to protect himself.

Meanwhile, Duke (Dave Bautista, once again showing audiences he's more than Drax) died after drinking what was seemingly a poisoned drink meant for Miles. The drink was dosed with pineapple juice, which immediately killed him because he’s deathly allergic to pineapples. However, as the twist-filled Glass Onion ending explained, Andi and Duke were both murdered by Miles.

Andi was murdered by Miles because she knew his secrets and might damage his credibility, and Duke was killed because he had learned of Andi’s death and wanted to negotiate with Miles for a payout. Despite claiming that he’s always there for his friends, and the majority of his friends standing by his side, Miles is quick to turn against them to protect himself.

Why Miles Pushed Andi Out Of Their Company

Andi Was Going To Disrupt The Launch Of Klear

As the Glass Onion ending explained, Miles was more of a con-man than an inventor, and he believed himself to be a genius, although he used other people's ideas to find success. Miles ultimately pushed Andi out of Alpha, despite the fact that she co-founded the company, because he had plans regarding the hydrogen cell that she didn’t approve of.

Andi knew that Klear, the new power source they were working on, was incredibly dangerous, but Miles was determined to launch it anyway.

Andi knew that Klear, the new power source they were working on, was incredibly dangerous, but Miles was determined to launch it anyway. Claiming that he came up with the idea for the company and then bribing their friends to testify against her, Miles was able to take complete control of Alpha with no one to stop him or his terrible ideas.

The Murder Mystery Twist (Why Miles Decided To Kill At His Party)

Miles Planned The Killings So He Could Remain A Perceived Victim

While Miles planned a murder mystery party for fun, and Benoit Blanc believed his friends had a motive to kill him, it was Miles who ended up being the killer at the end of Glass Onion. Miles murdering Andi was premeditated, as was nearly killing Helen (who was shot during the party), but killing Duke was something he did spontaneously because the fear of being found out as Glass Onion's killer was greater than anything else.

It was a twist that maintained Miles’ innocence — at least for a while before being named the Glass Onion killer.

Miles trying to pin Duke’s murder on his friends was a way for him to remain a victim. Who would think Miles killed Duke when he was the one who invited them all to his private island? It was a twist that maintained Miles’ innocence — at least for a while before being named the Glass Onion killer.

Miles Bron’s Full Alpha Plan Explained

The Buisnessman Wanted To Expand His Wealth Using Dangerous Technology

Miles Bron is not the smartest person, and that is made apparent in his haphazard plan to kill Duke and hide Andi’s napkin rather than destroy it. Carrying on with terrible ideas, Miles’ Alpha plan was to sell his hydrogen fuel cell to various companies and countries. His home on the Greek island proved that this new energy source could power a vast space without creating any pollution.

While the hydrogen fuel plan was sound on paper, it was highly unstable

Klear was simply a way for him to make a ton of money and be remembered in the “same breath as the Mona Lisa.” His plan was simply about fame and fortune — which says a lot about the character, as he already had both, but wanted more. While the hydrogen fuel plan was sound on paper, it was highly unstable and, as Glass Onion’s ending explained, was incredibly unsafe.

Cassandra 'Andi' Brand Twist: Why Helen Took Her Sister’s Place

Andi's Twin Sister Teamed Up With Benoit Blanc

To fully have the Glass Onion ending explained, the Cassandra Brand twist needs to be covered — that Andi who came to the island was actually her twin sister Helen. She wanted to take down Miles and prove that he killed her sister, and that she didn’t die by suicide. Despite not knowing Andi’s friends very well, she braved everything and posed as her sister in a bid to help Benoit Blanc find clues that would confirm he was guilty.

Detective Benoit Blanc needed someone on the inside

What’s more, Detective Benoit Blanc needed someone on the inside, especially since he wasn’t directly invited to attend the murder mystery party. He hoped that Helen posing as Andi would rattle the friend group and provide them with the information they needed to avenge Andi’s death.

Why Miles’ Friends Finally Turned Against Him

The Murder Mystery Weekend Showed Them Who Miles Truly Was

Glass Onion's ending explained that Miles had his friends under his thumb. By giving them money or getting them out of any trouble they found themselves in, Miles had enormous power and influence over all of his friends. They didn’t always like it, but they benefited from Miles bankrolling their endeavors. However, after Helen smashed all of Miles’ stuff, blew up his home, and burned down the Mona Lisa painting, they realized they didn’t need to defend him anymore and turned against him.

Glass Onion's tech billionaire only cared about himself and would do anything in his power to protect his own reputation.

They might have felt some fear before, but they were finally seeing that he didn’t really care about them — Glass Onion's tech billionaire only cared about himself and would do anything in his power to protect his own reputation. Killing Andi and Duke showed them that Miles believed they were dispensable, and they were no longer willing to play his game anymore. Glass Onion’s characters had had enough of Miles and would no longer let him control them or the narrative to the public. At long last, they were finally doing the right thing.