Buster Crabbe #6

Buster Crabbe and his partner Whiskers arrive in Galveston and spot a mysterious woman who survived a ship that vanished two months prior—the same woman linked to six other vessels lost in the Gulf in recent months. Determined to investigate despite the Coast Guard's skepticism, Buster books passage on the S.S. Gulfsonion, only to discover the woman is part of a pirate operation run by a Nazi U-boat commander and his wife, "the Devil's Disciple," who've been systematically looting and sinking ships since the war's end. With the ship targeted for destruction and the lifeboats sabotaged, Buster must use every ounce of his strength and wits to stop a torpedo and expose the deadly conspiracy lurking beneath the Gulf.

When a widow rushes to the sheriff in Pecos Gulch with a desperate plea, Buster Crabbe learns that her son Jeff has fallen under the sway of the outlaw Keno and his gang—and plans to help them rob the local bank. Buster intercepts the holdup and gives the troubled boy a second chance, but Jeff's pride and resentment lead him straight back into danger, forcing Buster to track down the outlaws across treacherous terrain before their cruelty claims another victim.