Industrialist Paul Radcliffe (Hugh Prosser) hires Bruce to investigate the saucers as he thinks they may have a commercial use.

The Recorder's only source, an abandoned mine on the land belonging to Jaunita (Judy Clark) and Frank Farrell (Ralph Hodges), has run dry and he needs to steal supplies from the US Government.

Krendon (Tristram Coffin), one of his henchmen, releases a deadly flying saucer on an attack against the Panama Canal.

In the resolution at the beginning of chapter 15, Gentry is replaced by an animated sequence which shows him escaping death by use of a parachute hidden under his jacket.

[4] The flying disc is described by Harmon and Glut as "an embarrassingly bad animated cartoon drawn over the action scenes."