[#] 31 [Date] Aug/Sept 1952 [Cover artist] Jack Davis [Story] Survival... Or Death! [Story artist] Jack Davis [Host] Crypt Keeper [Summary] 
The owners of a cargo vessel build a complicated rat trap to catch rodents on their ship, resulting in a device that traps the rats and forces them to kill each other for survival. Luckily, humans are more advanced than this - or so the men think, until their own boat begins to sink.