A rancher goes missing and a security guard company takes over, replacing the ranch hands. Cannon is called in by Mrs. Lucas, who feels that he can help in the investigation. This causes the security team problems because of their ulterior motive.
Freight shipments are stolen by computer, and Cannon's in the middle of a custody fight.
A girl wounded in a holdup mysteriously refuses to identify the crook.
A lawyer defending two men accused of robbery becomes the victim of repeated attacks on her life.
A draft dodger witnesses the murder of a trade union boss on his way to the Yukon.