Considering that Siegel and Flanagan met working on a horror movie, it should come as no surprise that they've continued to collaborate on several other projects, mostly in that same genre. The duo cowrote the 2016 film "Hush," which Siegel starred in and Flanagan directed. Siegel also starred in "Ouija: Origin of Evil" later in 2016 and "Gerald's Game" in 2017.
Moreover, Siegel is an important part of the ensemble of actors that have appeared in almost all of Flanagan's Netflix projects. Siegel starred as the middle Crain sibling, Theodora (aka Theo), in "The Haunting of Hill House" in 2018, then returned for a role as the haunting Viola Willoughby in the anthology's next entry, 2020's "The Haunting of Bly Manor." In 2021, she starred in "Midnight Mass," and in 2023, she's one of the many siblings in "The Fall of the House of Usher."
