Hidden Enemy

Warren Hull

as

Bill MacGregor

Kay Linaker

as

Sonia Manning

Wilhelm von Br...

as

Professor Wern...

George Clevela...

as

John MacGregor

Fern Emmett

as

Aunt Mary

Edward Keane

as

Newspaper Edit...

Willy Castello

as

Eric Bowman

John Sheehan

as

Marden

Herbert Corthe...

as

Pete

Vince Rush

as

Gruen