A television era is ending with the series finale of Supernatural after 15 seasons, and the last batch of episodes brought back several familiar faces for a swan song. Not among those familiar faces has been Lauren Cohan, who played Bela Talbot well before she broke into the zombie apocalypse scene as Maggie on The Walking Dead. Like so many characters on Supernatural, Bela died a gruesome death. Unlike many others, however, Bela stayed dead, and Cohan didn’t return after her departure back in Season 3. The actress has explained why.