Man-woman team of investigators uncover a gang whose mad scientist leader has developed an invisibility chemical and plans to build a mercenary army of invisible men.
Richard Webb
as Lane Carson
Aline Towne
as Carol Richards
Stanley Price
as The Phantom Ruler
Lane Bradford
as Burton
John Crawford
as Harris
George Meeker
as "Harry Long"
Edward Keane
as Warren Madison
Dale Van Sickel
as Otto Wagner, aka "Frank Martin"
Douglas Evans
as "James Hunter"
John Hamilton
as "Henry Miller"
Roy Gordon
as Mr. Moore
Harold Goodwin
as Kirk - Body-Shop Henchman [Ch.11] (uncredited)
