I don’t think I’ve seen a better movie about domestic abuse than Xavier Legrand’s taut thriller, “Custody.” It’s brutal in content and equally brutal to watch. But it gets to you in unexpected ways in capturing the fear of just being in the presence of a human time bomb capable of detonating at the slightest provocation.Legrand, in continuing the story begun in his 2013 Oscar-nominated short “Just Before Losing Everything,” gets [...]