Musician Steve Lacy may have let slip a plot detail from Spider-Man: Brand New Day during a red carpet interview at the film's premiere on Sunday, July 25 — three days before the movie reaches cinemas on Friday, July 31.

Lacy was interviewed by streamer Valkyrae at the premiere event. When she asked which character he was most excited to see, Lacy replied "Jean" and added: "She's the villain, but there's a reason to her madness," according to Billboard. Valkyrae's response was immediate: "OK… is that a spoiler?"

Many viewers connected Lacy's comment to actor Sadie Sink, whose role in the film had been kept under wraps. Sink's involvement in the Marvel project had not been publicly detailed ahead of the premiere, leaving fans to piece together the hint themselves. The moment quickly circulated online, with coverage from the Los Angeles Times, Rolling Stone and The Independent all picking up the story on July 28.

Lacy's connection to the film goes beyond the red carpet. His song "Oh Yeah?" appears on the Spider-Man: Brand New Day soundtrack. The track is also the title song of Lacy's third studio album, released earlier in July — the same month as the premiere.

Spider-Man: Brand New Day stars Tom Holland and is directed by Destin Daniel Cretton, according to Marvel. The film is the latest entry in Holland's run as the web-slinging hero.

Whether Lacy's comment amounts to a genuine spoiler or simply a vague tease is something audiences will be able to judge for themselves when the film opens on July 31. For now, the clip stands as a reminder that the most carefully guarded plot points can surface in the unlikeliest of moments — in this case, a musician chatting on a red carpet about a character he found compelling.

And for Lacy, the premiere served double duty: plugging both a major soundtrack placement and a brand-new album, all in one soundbite.