First saw this marvellous film as a teenager in the late 1960s, and have always remembered it, especially the train scenes, as it convincingly caught the narrow, confining space of a train.
I thought the plot and script were quite realistic generally , and the famous Wayne and Naughton English cricket fans abroad is a nice and amusing counterpoint.
Despite its age, this is still a good film, and indicative of Hitchcock's later works.