Two newly-appointed postal inspectors, Frank Marshall and 'Slim" Hewitt, set out to track down the sender of a time-bomb to a U. S. Senator and, during their investigation, run across a hooded organization that is terrorizing an American city. They also meet Don Foster, who is loud in his condemnation of the terrorists, and his sister, Nancy, who fears for her brother's life.

Genres

Cast

Bruce Cabot

Frank Marshall

Marguerite Churchill

Nancy Foster

Crawford Weaver

Slim Hewitt

Ward Bond

Don Foster

Charles C. Wilson

Colonel McCollum (as Charles Wilson)

John Hamilton

Cummings

Arthur Loft

Gardner

John Tyrrell

Feeney (as John Tyrell)