An Arab sheik’s daughter (Maureen O’Hara) avenges his death, blamed on Hassan (Paul Christian) and his Black Riders.

In post-war Europe, a diverse group of passengers aboard a U.S. Army train to bombed-out Frankfurt becomes involved in a Nazi assassination plot.

In 17th-century England, Charles II, the rightful heir to the kingdom, is driven from his country by militants working for rogue leader Oliver Cromwell. Charles ends up in the Netherlands,…