The latest from Guillermo Del Toro, Nightmare Alley is a psychological thriller based on a William Lindsay Gresham book from 1946 - which is also the era it's set in. Circling a tale of grifters and cons, it also boasts a huge cast, including Bradley Cooper, Cate Blanchett, Toni Collette and Willem Dafoe. We get into whether this film works for us, and got under our skin.