Bulldog) and Algy, in the midst of preparations for the former's wedding in London, are summoned to more important matters at the house of an eccentric scientist who has invented a prototype electric "death-ray" device which has the potential to revolutionize warfare.
John Howard as Capt. Hugh Chesterton "Bulldog" Drummond
Heather Angel as Phyllis Clavering
H.B. Warner as Col. J.A. Nielson
Reginald Denny as Algernon "Algy" Longworth
E.E. Clive as "Tenny" Tennison
Jean Fenwick as Lady Beryl Ledyard
Zeffie Tilbury as Aunt Meg
George Zucco as Rolf Alferson
Leonard Mudie as Richard Gannett
Evan Thomas as John Smith
Clyde Cook as Short, Mustachio'd Constable (Sacker)
David Clyde as Tall, Cleanshaven Constable (McThane)
George Regas as Soongh, Lady Beryl's man
Neil Fitzgerald as Sir Malcolm McLeonard
Claud Allister as Sir Basil Leghorne
Forrester Harvey as Constable Severn
John Sutton as Inspector Tredennis
Directed by James P. Hogan
