"In early 1940, Johan was a happy teen in Haarlem, Holland. By May, the Second World War brought oppression, persecution and despair with the Nazi invasion of his homeland. Hitler's regime took control of everything. Choirs, Boy Scouts, radios and Jewish friends all began to disappear. Hidden in Haarlem is based on the true stories of an ordinary Dutch family who survived five war-torn years of insurmountable odds - showing courage, conviction, ingenuity...