WARNING: This article contains spoilers forGlass Onion.
“It means so much that they were in the movie,” the filmmaker tells EW.
Lansburydied in Octoberat 96, while Sondheimpassed away last yearat 91.

Stephen Sondheim; Angela Lansbury.Walter McBride/WireImage; Phillip Massey/WireImage
“But they do both have cameos in the film.
“She’s just a hero.
And then Sondheim has a massive connection to the murder-mystery genre.

Kate Hudson, Jessica Henwick, Daniel Craig, and Leslie Odom Jr. in ‘Glass Onion: A Knives Out Mystery’.John Wilson/Netflix
He was a puzzle and mystery nut.
“I’m a musical theater nerd,” Johnson confesses.
“Sondheim’s always been my guy.”
It was really as quick and simple as that.
He was at his house, and he had blurred out the background.
And I got on the Zoom with him, we got to chat for about 15 minutes.
He couldn’t have been lovelier, and he was so game for doing this little cameo.
It brings me so much joy that he’s in the movie.”
“It makes it credible.
If everybody doesn’t like each other, that’s one thing.
But he layered in the history of real friendship and rising together.”
There’s a bunch of lines fromMerrilythat are planted throughout.
And if you look in Blanc’s apartment, there’s a poster forMerrilyon the wall.”
Later, during a flashback, we see him answer the door when a prospective client comes calling.
Grant’s appearanceprompted many viewers to askwhether it was confirmation that Blanc is queer.
When Johnson was asked about the scene,he replied, “Yes, he obviously is.”
Johnson was tickled by the idea of Grant playing Blanc’s lover.
That’s because only his voice is present.
Gordon-Levitt has a long history with Johnson, having starred inBrickandLooper.
He also made cameos in Johnson’sKnives Out,The Brothers Bloom, and evenStar Wars: The Last Jedi.
Startled, they decline, and she shrugs, quipping about how it’s Bron’s money.
Glass Onionis currently playing in select theaters for a one-week run.
The film hitsNetflixon Dec. 23.