Naomi Watts Says "The Watcher"'s Central Mystery Remains Unsolved Heading Into Season 2

In the season one finale, private investigator Theodora Birch (Noma Dumezweni) dies of cancer after falsely confessing to being The Watcher, but all of the other cast members could return for the second season. Watts has said that the actors do not know who The Watcher is either, which suggests all of our favorite suspicious characters will likely return, from Watts and Cannavale to Jennifer Coolidge, Mia Farrow, and Henry Hunter Hall.