“As the old saying goes, no good deed goes unpunished.” David D’Arcy recounts the aggravating story of Russian-born American art dealer Alexander Khochinsky, who reported to Poland that his father, a World War II veteran, had left him an 18th-century portrait that had belonged to Poland’s National Museum in Poznan, was stolen by German troops in 1943, and then seized (and kept) by Soviet troops as the Nazis retreated.