Reportero Patsy Reynolds (Robin Raymond) y el fotógrafo Eddie Porter (Frank Jenks) se asignan a entrevistar a John Foster (Davison Clark), jefe de la Foundadtion Emmerson en relación con un dispositivo de escucha en el que la organización está trabajando. Foster acude al laboratorio para ver al profesor Reynolds (HB Warner), el verdadero inventor. Pronto se ven involucrados en varios tiroteos, un cadáver en su coche que aparece y desaparece varias veces, la pérdida de sus puestos de trabajo y varias personas que, o bien piensan que son asesinos o son candidatos a ser asesinados.

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.