The Tunnel, also known as Transatlantic Tunnel in the United States, is a 1935 British science fiction film directed by Maurice Elvey and stars Richard Dix, Leslie Banks, Madge Evans, Helen Vinson, C. Aubrey Smith and Basil Sydney. It is based on the 1913 novel Der Tunnel by Bernhard Kellermann, about the building of a transatlantic tunnel between New York and London. The script was written by Curt Siodmak, L. du Garde Peach and Clemence Dane. The film, produced at a time when the threat of war loomed in Europe, emphasized international cooperation between the United States and the United Kingdom.

Plot

A group of wealthy industrialists gather at the home of Mr. Lloyd, a millionaire who introduces them to Richard "Mack" McAllan, the engineer who successfully spearheaded the construction of the Channel Tunnel (the story takes place in the unspecified near future, though it is noted in the film that the Channel Tunnel is built "in 1940") and the Bahamas-Miami tunnel. McAllan informs the group that the "Allanite steel" he developed, along with a "radium drill" developed by his friend Frederick "Robbie" Robbins, makes it possible to construct an undersea tunnel linking England with the United States. Though the group is initially skeptical, the backing of Lloyd and his associate Mostyn convinces the group to buy shares in the project.