James Stewart and Doris Day, in a rare dramatic role, are superb in this brilliant suspense thriller from the undisputed master. Stewart and Day play Ben and Jo MacKenna, innocent Americans vacationing in Morocco with their son, Hank. After a French spy dies in Ben's arms in the Marrakech market, the couple discovers their son has been kidnapped and taken to England. Not knowing who they can trust, the MacKennas are caught up in a nightmare of international espionage, assassinations and terror. Soon, all of their lives hang in the balance as they draw closer to the truth and a chilling climatic moment in London's famous Royal Albert Hall.