The Walking Dead closed out its fifth season tonight, and we got a cryptic treat: AMC’s teaser for Fear the Walking Dead — also a great reminder to get vaccinated. (If you don’t, you’re gonna have a bad time.) Alycia Debnam Carey, Cliff Curtis, Kim Dickens, and Frank Dillane star in the L.A.-set prequel series, which debuts this summer and looks more problematic than any earthquake.