The Man Who Knew Infinity ★★★★

I enjoyed this poignant biopic about young Indian mathematician Srinivasa Ramanujan, who discovered a genius for pure maths while working on his own in Madras.

The film follows his journey to Trinity College, Cambridge, to work with professor G H Hardy, just as the First World War breaks out. But this dream come true soon turns sour, as an isolated Ramanujan becomes increasingly ill and depressed. Cambridge can rarely have looked so cold and bleak on film.

Dev Patel and Jeremy Irons are excellent as Ramanujan and Hardy, and there's a good supporting cast including Toby Jones. Unfortunately, Ramanujan's wife and mother don't get much screen time and aren't properly developed as characters.