The Tunnel

01 Richard Dix as Richard 'Mack' McAllan 02 Leslie Banks as Frederick 'Robbie' Robbins 03 Madge Evans as Ruth McAllan 04 Helen Vinson as Varlia Lloyd 05 C. Aubrey Smith as Lloyd 06 Basil Sydney as Mostyn 07 Henry Oscar as Grellier 08 Hilda Trevelyan as Mary 09 Cyril Raymond as Harriman 10 Jimmy Hanley as Geoffrey McAllan 11 George Arliss as Prime Minister of Great Britain 12 Walter Huston as President of the United States 13 Maurice Elvey Director