Release Date: September 2016 If you've ever wondered how Game of Thrones characters would fare in The Walking Dead, this is as close as you're going to get. Samwell Tarly wouldn't last long, but maybe actor John Bradley might. Bradley will star in Patient Zero alongside former-Doctor Who star Matt Smith, Thrones co-star Natalie Dormer and Stanley Tucci as they seek to survive the zombie apocalypse.