Buzzkill’s Ending Explained: Who Was Behind the Mask?

Who Is the Killer in Buzzkill?

Kendall is the killer.

Yes, Brec Bassinger's bubbly, hyper-committed Sigma sister has been behind the mask while everyone else is busy suspecting James, questioning Nora, and trying to survive the night. The reveal completely reframes the version of Kendall we've been watching: the polished sorority girl with the stories, expensive-looking gifts, and seemingly perfect life isn't simply hiding a murderous side. She's been lying about who she is in the first place. 

Even Bassinger didn't see the twist coming initially. She told TV Insider that her first read had her viewing Kendall as the classic bubbly sorority girl, only for the reveal to make her reconsider the character's behavior on a second pass. Basically, Nora wasn't the only one who needed to look again.

How Does Nora Figure Out Kendall Is the Killer?

Turns out the seemingly useless Drunk Nora clues weren't so useless after all.

Across the movie, Nora's intoxicated memories return as fragmented pieces of information rather than one convenient flash of clarity. By the end, she finally understands what several of those pieces have been pointing toward. Kendall's supposedly expensive gold necklaces aren't actually what she claimed. The glamorous photos showing off her world travels were fabricated using AI. Most importantly, Sarah had been investigating Kendall before she died and discovered that Kendall hadn't actually been admitted to the university; she'd simply shown up and inserted herself into Sigma. 

Another clue connects Kendall to a juvenile detention camp, where someone from Sarah's psych class recognized her. Even one of Nora's more ridiculous scribbles finally makes sense: what looked like “A-slut” was actually Tulsa, pointing back toward Kendall's Oklahoma story. 

Individually, Nora's clues look like the work of someone who should probably have surrendered the Sharpie several drinks ago. Together, they expose a person whose entire identity has been constructed.

Why Did Kendall Kill Sarah?

Sarah got too close to the truth.

She discovered Kendall's juvenile-detention history, learned she hadn't actually been admitted to the university, and gathered evidence exposing the fake identity Kendall had built around herself. Killing Sarah allowed Kendall to protect that carefully constructed life while suspicion landed somewhere much more convenient: Sarah's ex-boyfriend James. 

Nora becomes the unexpected problem because she refuses to accept that James killed Sarah. Kendall initially assumes the unreliable party girl won't be taken seriously, but Nora keeps investigating anyway. Once James is released on bail, Kendall invites him to the sorority house under the pretense that she has evidence clearing him, planning to kill him and frame Nora for his murder. 

From there, the body count grows because other people keep stumbling into information Kendall needs buried. Dawn discovers what Sarah learned about Kendall's past. Holly sees James after hiding the alcohol from Nora. Every attempt to contain the original lie creates another problem Kendall decides murder can solve. 

Which is one way to handle being caught lying on your college application. Not one we'd recommend.

Why Does the Kendall Reveal Work?

Kendall and Nora are much more interesting opposites once you know the truth.

Nora spends most of Buzzkill being treated like the unreliable one. She's messy. She drinks too much. Her own sorority sisters have stopped trusting her judgment. Even when she's correct about James, she has trouble convincing anyone because her reputation arrives in the room before her evidence does.

Kendall has built the opposite reputation. She's polished, committed to Sigma, generous, organized, and very invested in presenting herself as someone everybody should trust. Except almost everything underneath that presentation is manufactured.

So the final reveal isn't simply messy girl discovers perfect girl is secretly evil. Nora survives partly because she eventually stops treating her own messiness as proof that she's incapable of being right. Kendall falls apart because maintaining the image of having everything together has become something she'll literally kill to protect.

Turns out the unreliable one was telling the truth.

What Happens During Nora and Kendall’s Final Fight?

Once Kendall knows Nora has figured everything out, subtlety officially leaves the Sigma house.

Nora stays behind because Beth is still trapped inside, leading directly to her confrontation with Kendall. Kendall blames Nora for forcing the situation to escalate, insisting that Nora's refusal to let Sarah's murder go created the chain of problems she had to keep “fixing.” She also reveals her plan to murder James and make Nora take the blame. 

Then comes the fight.

Both women take serious damage, and the confrontation ends with Nora and Kendall bleeding inside the house. Police eventually find Nora alive, but when she asks about Kendall, there's no body where Kendall should be. 

Horror fans know exactly what a missing body means.

Is Kendall Actually Dead?

No.

Buzzkill removes any ambiguity about that one before the credits finish the job. Five weeks after the massacre, Nora and the surviving Sigmas are still recovering. Nora visits Beth in the hospital, where the friends reunite after everything they survived. Outside, however, Kendall appears again. She’s injured, but very much alive. 

So Nora solved the mystery. She did not permanently solve Kendall. Important distinction.

What Does Buzzkill’s Final Scene Mean?

Kendall surviving keeps the ending from becoming a clean victory, but the five-week jump also shows that Nora herself has changed.

She isn't suddenly transformed into a completely different person. That's important. Buzzkill spends too much time rejecting the perfect Final Girl idea to end by magically turning Nora into one. Instead, she finally learns to trust herself even when everyone around her has good reason to question her judgment. Nora may not fit the traditional survivor template, but Final Girl Energy has plenty of room for somebody who makes it to the credits her own way.

Her drinking also looks different in the epilogue. When she reunites with her friends, the mimosas she brings are actually orange juice. After an entire movie where alcohol functions as Nora's bizarre investigative superpower, she no longer needs Drunk Nora to tell her what's happening. 

Kendall lurking outside the hospital complicates that growth in exactly the way a slasher ending should. Nora survived the night, uncovered the truth, and proved everyone wrong. Unfortunately, the truth survived too.

Will There Be a Buzzkill 2?

Nothing has been officially announced yet.

Kendall's survival clearly leaves the door open, though, and Bassinger has already said she'd be interested in returning. Speaking about the ending, she said it excited her and that she'd happily reunite with director Jem Garrard and the rest of the cast for another installment. 

For now, the safest conclusion is simply that Buzzkill intentionally refuses to close Kendall's story. And honestly, Nora deserves at least one semester where nobody tries to murder her. Whether Kendall agrees remains another question.

Buzzkill is streaming free on Tubi. If you somehow reached the bottom of an ending explainer before actually watching the movie, we admire your relationship with spoilers.