An engineer leads the building of a trans-Atlantic tunnel linking Britain and the United States.

Richard Dix
as Richard 'Mack' McAllan

Leslie Banks
as Frederick 'Robbie' Robbins

Madge Evans
as Ruth McAllan

Helen Vinson
as Varlia Lloyd

C. Aubrey Smith
as Lloyd

Basil Sydney
as Mostyn

Henry Oscar
as Grellier

Hilda Trevelyan
as Mary

Cyril Raymond
as Harriman

Jimmy Hanley
as Geoffrey McAllan
CinemaSerf
Richard Dix is visionary engineer "Richard McAllan" who manages to convince a group of investors to support his plans for a transatlantic tunnel linking the UK and the USA. Immediately, all of my claustrophobic genes kicked in - that's about 4,000 miles of reinforced concrete at an average depth of ...