The Zookeeper’s Wife may be based on a true story–as recounted in Diane Ackerman’s 2007 book of the same name–but at heart, it’s all movie. That’s both good and bad. Jessica Chastain plays Antonina Zabinski, who, with her husband Jan (Johan Heldenbergh), saved more than 300 Jewish residents of the Warsaw ghetto during the German invasion of Poland.