Panic in the City

A CITY EXPOSED TO THE MENACE OF THE ATOM BOMB!

When a man collapses on the street, he is brought to the hospital and when he was about to be x-rayed, the technician discovers that he is contaminated with radiation. A federal agent arrives to find out how he got infected. They learn that he is a scientist. But before he could be questioned he's killed. So they have to find out what's going on.