László Nemes’s acclaimed Holocaust drama Son of Saul opens Friday at Music Box, and longtime Reader contributor Jonathan Rosenbaum weighs in with a four-star review. We’ve also got new reviews of: Anesthesia, an indie ensemble drama featuring Kristen Stewart, Sam Waterston, Gretchen Mol, Michael K. Williams, and Tim Blake Nelson (who also directed); The Barkley Marathons: The Race That Eats Its Young, a documentary about the annual footrace that leads through Tennessee’s treacherous Frozen Head State Park; Cemetery of Splendor and Mekong Hotel, the two most recent films by Thai filmmaker (and SAIC graduate) Apichatpong Weerasethakul, who will attend the Monday screening of Cemetery; The 5th Wave, a sci-fi adventure about invading aliens that stars Chloe Grace Moretz; and The Finest Hours, a Disney drama about the daring U.S. Coast Guard rescue of a commercial tanker that split in two during a storm off the Massachusetts coast in 1952.