Reporter Patsy Reynolds and photographer Eddie Porter are assigned to interview John Foster, head of the Emmerson Foundation regarding a listening device the organization is working on. Foster evades them and they to the lab to see Professor Reynolds, the real inventor. Soon, they are involved in several shootings, blueprints that change hands several times, a corpse in their car that appears and disappears a few times, the loss of their jobs and several people who either think they are killers or candidates for being killed.
Frank Jenks
as Eddie Porter
Robin Raymond
as Patsy Clark
H.B. Warner
as Professor Reynolds
Ray Walker
as Jimmie Foster
Davison Clark
as John Foster
Robert Homans
as Police Lieutenant Daniel O'Day (as Bob Homans)
Milton Kibbee
as Wheeler
Frank McGlynn Sr.
as Blake
Pat Gleason
as Red
Edward Keane
as Gentry
Earle S. Dewey
as Eddie Griffith
Gene Roth
as Mr. Joyce
