

After being captured during a bank robbery, a cowboy is sent to a prison located in a swamp, where he contracts malaria. He soon escapes and, with the help of a Mexican, sets out to track down his partner, who escaped from the bank robbery with all the money.
Practical Effects
Swamp location shooting looks genuinely miserable
Acting
John Ireland's sweaty desperation carries the whole thing

Director
Domenico Paolella
Trivia, insights & behind the scenes
Director Domenico Paolella cranked out multiple spaghetti westerns in 1967 alone, treating the genre like factory work.
The 'prison fever' plot device reflects Italian audiences' fascination with American chain gangs and tropical diseases as exotic punishment.