Ashley Zukerman (Succession, Fear Street trilogy) and Jessica Henwick (Huntington, The Royal Hotel, Glass Onion) have been added to the cast for the third season of the Apple TV+ series Silo, based on the novels of Hugh Howey. TheWrap reported that in Season 3, "Zukerman will star as Daniel, a young and hungry congressman, while Henwick joins the cast as Helen, a whip-smart reporter, per the official character descriptions."
Silo creator Graham Yost told TheWrap that Daniel and Helen are characters in the second book in Hugh Howey's trilogy, but some changes have been made: "We've monkeyed with the origin story dramatically, renaming him from Donald to Daniel. Whichever way you are in the political spectrum, we just didn't want anyone named Donald in that role. It's just too confusing for people and are we making a point? Are we not making a point? We're just not going to address the point. And we wanted to make more out of their relationship than was really in the book, so we've also gender-swapped Thurman."
Yost executive produces Silo alongside Howey, series star Rebecca Ferguson, Morten Tyldum, who also directs, Nina Jack, Fred Golan, Rémi Aubuchon, Michael Dinner, Joanna Thapa and AMC.