Spider-Man: Brand New Day – Post credits scene and Sadie Sink twist explained

Fans have been waiting for months

Fans are pouring out of screenings of Brand New Day with one questions on their lips: where does the web-slinger go from here? The latest Sony and Marvel outing saves its biggest teases for after the story ends, and both point squarely at the future of the wider franchise. If you have not seen it yet, this is your final warning to look away.

After months of secrecy, the film finally answers the questions that have swirled since the first trailer - and in doing so it lines up the next act for Tom Holland's Spider-Man and hints at a major reboot on the horizon.

Where the Brand New Day credits scene sends Spider-Man next

Having saved New York City over the course of the film, Holland's friendly neighbourhood hero looks set to head off-world once again. The post-credits scene confirms that Spider-Man will return to the Marvel Cinematic Universe, and appears to leave Earth behind in his next appearance. That has fans debating whether he shows up first in "Avengers: Doomsday" or holds out for "Secret Wars", as Variety broke down after the premiere.

It is a familiar move for Marvel, which has long used its post-credits stingers to plant seeds for films still years away, sending audiences home already speculating about the next crossover. Sending Spider-Man off-world is a notable shift for a hero whose stories have been rooted in the streets of New York, and it raises the stakes for wherever he lands next.

Sadie Sink is Jean Grey

The film's other headline reveal settles a long-running casting mystery. The red-headed "Stranger Things" star Sadie Sink is playing Jean Grey, one of the original members of the X-Men. It is a significant piece of the puzzle, signalling that Marvel's mutants are finally moving into the shared universe in earnest.

Jean Grey is no minor player in that world. As one of the founding X-Men and the character at the heart of the beloved Phoenix storyline, she has anchored some of the most ambitious arcs in Marvel history, which is why her casting has set expectations so high among long-time comic readers.

Her introduction is widely read as a bridge to the studio's planned "X-Men" movie, though no cast or release details for that project have been announced. For now, Sink's casting is the clearest sign yet of how the next reboot will take shape, and a hint that the mutants will be woven into the MCU rather than kept at arm's length.

What we still do not know

For all the fireworks, plenty remains under wraps. Marvel has not confirmed exactly which team-up film marks Spider-Man's return, nor when the X-Men reboot will land or who will join Sink in it. What is clear is that Brand New Day is less a full stop than a springboard, setting up threads the studio intends to pull on for years.

So while the credits roll on this chapter, the real story is only beginning. Whichever Avengers film calls him up next, Holland's Spider-Man is heading for the stars - and Jean Grey is waiting in the wings.