The film was written by former crime reporter Sydney Boehm, based on a serial by William P. McGivern, which appeared in the Saturday Evening Post and was published as a novel in 1953.
Filmul a fost scris de fostul reporter de investigații criminalistice Sydney Boehm bazat pe un serial de William P. McGivern care a apărut în Saturday Evening Post și care a fost publicat ca un roman în 1952.