What if Hitler’s body hadn’t been cremated in Berlin by the SS? That alt-history teaser is the starting point for Ben Parker’s action thriller, which posits a tug of war over the corpse between a Soviet unit escorting it back to Stalin and pro-Nazi partisans hellbent on recovering it. Taking place in the Polish forests in the dying days of the second world war, Burial has an ambitious scope and a rueful sense of war’s barrenness – so it’s a shame it can’t unwrap its formaldehyde-steeped central conceit into something dramatically satisfying. Brana (Charlotte Vega) is a young intelligence officer...