My Brother’s Keeper: a former Guantánamo detainee, his guard and their unlikely friendship

★ BAFTA longlist, British Short Film

Mohamedou Ould Salahi spent fourteen years at Guantanamo without ever being charged, and one of his former guards flies to Mauritania to see him again after more than a decade apart. Their reunion turns a story of torture and detention into something rarer: an account of forgiveness that neither man expected to find on the other side of a prison wall.

Why it's free: Free on The Guardian's own channel; the paper commissioned and published it.