Expect to be taken aback the first time The Unknown Country, a work of ostensible fiction newly released on DVD and Blu-ray ($22, Music Box), abruptly shifts to a documentary. We’ve just watched an actor, Lily Gladstone, stop at a Deadwood diner after a long night of driving. The camera is focused on her, not the loquacious server at the greasy spoon, who in between dispensing … [Read more...]