Vance Skarstedt

Before Mike Nelson can investigate the disappearance of two geologists the sea washes one of them upon the beach, his body bearing marks apparently made by the suction valves of a giant octopus. When later the body of a young boy is found with the same mysterious marks, Mike is sure that the killer is a diabolically clever man who has somehow found a way to duplicate the mark of an octopus.

Trail boss Bat Masterson runs afoul of an illegal toll as he leads a drive to the rail head. Between the local politics of Protection, Kansas and the local feed dealer, Bat finds unexpected action.

When a talented "cracksman" (a master safecracker), runs afoul of the Highway Patrol, there's action-packed adventure in store.

Disguised as men, two girls stage a series of armed robberies. After each foray, they change to normal dress and slip undetected through Highway Patrol roadblocks.

Dan Mathews hunts for a man to keep him from being murdered by his brother-in-law.

Dan Mathews races against time to capture motel bandits before they strike again.