CBS All Access has confirmed part Collider's report on the cast of The Stand mini-series, officially announcing that James Marsden (Westworld), Amber Heard (Aquaman), Odessa Young (A Million Little Pieces), and Henry Zaga (The New Mutants) will star in the 10-episode adaptation of Stephen King's massive apocalypse epic. But a new piece of info centers on King himself; according to THR, the horror icon will write the tenth episode himself, which will include a new "coda" to the story not found in the source material. This is a super interesting bit of news. The Stand is …