12 Years a Slave and American Horror Story actress Sarah Paulson has officially joined M. Night Shyamalan’s Glass, the sequel that rounds up the Unbreakable, Split trilogy.

Shyamalan, who has been busy putting the finishing touches on the script for Glass over the last few weeks, took to social media to announce the Paulson’s addition to the cast which also includes James McAvoy, Bruce Willis, Samuel L. Jackson and Anya Taylor-Joy.

The unexpected ending to Split, which starred McAvoy and Taylor-Joy, shocked most audiences when it was revealed that the film did indeed sit within the Unbreakable world which gave way to a whole host of questions as to what Shyamalan had in store for his loyal fans next.

Unbreakable (2000)
Directed by M. Night Shyamalan
Shown: Samuel L. Jackson, Bruce Willis

Blumhouse Productions, Jason Blum alongside Marc Bienstock, Ashwin Rajan and Shyamalan are producing Glass.

In a recent interview, Jason Blum was asked if he had been made aware of Shyamalan’s plan to tie Unbreakable and Split together as a sequel in which he admitted he had no idea until the last minute.

“I did not know about it, I think Night has had this mapped out in his head for years. He would tease it out to me every now and again. He’s very private about that and kept it very much to himself. He had this thing all figured out, he’s a great strategic thinker that way and I really admire him for it”

Paulson has recently wrapped on the all female cast of Oceans Eight, alongside Anne Hathaway, Sandra Bullock, Cate Blanchett, Helena Bonham Carter, Katie Holmes and Matt Damon. Currently, she is filming alongside, Tom Hanks and Meryl Streep in Steven Spielberg’s The Papers

Glass has been slated for January 2019 release by Universal.