Mary is Missing follows an ensemble immersed in a crime thriller with delicious twists and turns. Now, with Paul Mescal involved, could Oscar success be imminent? Kate Demolder writes. Could it be that, at long last, we’re finally starting to see people with disabilities given opportunities to shine on screen? If a successful cultural transformation can be defined as the moment when actors of all kinds are in front of the camera, in roles not centred on their perceived differences, then Mary is Missing might just be one of those hallowed pieces that is ushering in a new era. Mary...