When G-Men Step In

Don Terry

Frederick 'Fred' Garth

Julie Bishop

Marjory Drake (as Jacqueline Wells)

Robert Paige

G-Man Bruce Garth

Gene Morgan

G-Man Theodore Neale

Paul Fix

Clip Phillips, Fred's Henchman

Stanley Andrews

Preston

Edward Earle

Morton

Horace McMahon

Jennings

Huey White

Henchman Turk