All the stars who make cameos in ‘Killers of the Flower Moon’

Warning: This post contains spoilers for “Killers of the Flower Moon”

“Killers of the Flower Moon” has many people talking after it was released in theaters on Oct. 20.

The Martin Scorsese crime drama is based off of David Grann’s book of the same name and tells the real-life story of the 1920s murders of members of the Osage Nation known as the "Reign of Terror."

It centers on the story of Mollie — portrayed by Lily Gladstone — who meets and marries World War I veteran Ernest Burkhart, played by Leonardo DiCaprio. Ernest's uncle, William “King” Hale (Robert De Niro), convinced him to marry Mollie in order to take her family's oil money and land.

Together, Ernest and William, along with Ernest's younger brother, then devise a plan to murder Mollie's sisters by recruiting other settlers into doing their dirty work.

Whether people are talking about the unexpected ending or Osage Nation sharing their thoughts on how their community was portrayed, there's also chatter about the brief and not-so-brief cameos that are included in "Killers of the Flower Moon."

Read on to find out who shows up in "Killers of the Flower Moon" and how it came to be.

Why did Martin Scorsese make a cameo at the end of ‘Killers of the Flower Moon’?

“Killers of the Flower Moon” ends with a radio show recapping Ernest and his uncle’s case after the FBI begins investigating the murders. Towards the end, Scorsese appears on stage and reads Mollie's real obituary.

Osage Nation Congress member Brandy Lemon, who served as a consultant for the movie, tells TODAY.com that Mollie’s obituary really blew Scorsese away, perhaps so much that he felt he wanted to be the one to read it.

“Mr. Scorsese coming out and reading Mollie’s obituary, the first thing he said to me when I met him in person at his home... was, ‘Have you read her obituary,” Lemon recalls. “He was just blown away by the fact that all of the things that she went through, and then for her obituary to be four sad lines that mentions nothing about her (sisters') murders, nothing about (her life).”

“It’s just hitting so hard, how profound that was,” she says.

It should be noted that Scorsese is also known for making cameos in all of his films, ranging from speaking to non-speaking appearances.

While Grann never spoke with Scorsese about why the director wanted to be the one to read the obit, he believes Scorsese is trying to make a statement with his cameo.

“I think it reflected his own sense of the moral responsibility now that this story is now being retold, and he’s one of the people helping to tell it, and with a kind of somberness of that responsibility,” he tells TODAY.com. “So that was kind of my interpretation.”

Scorsese himself has yet to specifically comment on his appearance but did express how much this film meant to him.

“I put everything I had into ‘Killers of the Flower Moon,’ and I was blessed to work with so many remarkable people at every stage,” he wrote on Instagram on Oct. 21. “It took a long time to bring it to the screen. Now I just want people to see it, to absorb it, to be with it.”

Pete Yorn portrays Acie Kirby

Singer-songwriter Pete Yorn is seen in the film as Acie Kirby, one of the men recruited by Ernest and his uncle to murder Mollie's sisters. "Killers of the Flower Moon" is Yorn's first feature film acting role.

"Remember when I cut all of my hair off a couple summers ago? It was for this… honored to be a part of this project. #KillersOfTheFlowerMoon in theaters this October," he wrote on Instagram, alongside the trailer in May.

Sturgill Simpson takes on Henry Grammer

The country singer-songwriter is seen in the film as Henry Grammer, a bootlegger and one of the perpetrators involved in the murders of the Osage members.

He works closely with De Niro's William “King” Hale and recommended people to do his bidding.

Jason Isbell is Bill Smith

Jason Isbell takes on the role of Bill Smith, the husband of Mollie's sister Reta, portrayed by JaNae Collins. Bill grows suspicious of Ernest's intentions with Mollie and believes he is after the family's money.

This appears to be the singer-songwriter’s biggest feature film role to date. He’s previously made appearances on “Deadwood: The Movie,” and had roles in shows like “Billions,” “Music Box” and “Squidbillies.”

Jack White plays a radio show host

The former White Stripes frontman is seen at the end during the radio show portion of the film. The musician does a couple voices and reads lines when the radio show is recapping the fate of the Osage Nation murders case.

Charlie Musselwhite is Alvin Reynolds

The harmonica player plays an intricate role in "Killers of the Flower Moon" as Alvin Reynolds, the man who tells Bureau of Investigations agent Tom White (Jesse Plemons) what he saw the night Mollie's sister Anna, portrayed by Cara Jade Myers, was killed. He helps push the investigation forward.

Everett Waller serves as Paul Red Eagle

There's a number of Osage tribal members in the film, including Everett Waller who portrays Osage leader Paul Red Eagle. He currently serves as the Osage Nation's minerals council chairman and speaks against the tragic murders.

"The movie is going to have a lot of people looking to ditch these head rights,” Waller told Vanity Fair, believing the film will inspire a certain amount of shame.

Brendon Fraser and John Lithgow make appearances in 'Killers of the Flower Moon'

While more like minor acting roles than cameos, viewers will see a glimpse of Brendon Fraser as William Hale’s attorney, W.S. Hamilton, who attempts to persuade Ernest to not testify against his uncle.

Meanwhile, on the opposing end is Lithgow's prosecutor Peter Leaward, who defends Ernest.

This article was originally published on TODAY.com