When Germany invades Poland, Luftwaffe bombers devastate Warsaw and the city’s zoo along with it. With most of their animals killed, or stolen away to Berlin, zookeepers Jan and Antonina Żabiński begin smuggling Jews into the empty cages. More “guests” hide inside the Żabińskis’s villa, emerging after dark for dinner, socializing and, on rare occasions of calm, piano concerts. They call this re...