The New Mutants is finally in cinemas! And to celebrate, here's our Ali talking to the impressive cast - namely Maisie Williams, Anya Taylor-Joy, Charlie Heaton, Alice Braga, Blu Hunt and Henry Zaga - as well as writer-director Josh Boone about how they put together their X-Men haunted house (ish) horror thriller. Note to self: do not hand Maisie Williams a tambourine any time soon. Now we know.