Four greedy bounty hunters kill a rewarded man , Rex Calhoun (Jose Canalejas) who flees along with his brother Bobi (Jaime Blanch) but this one results to be innocent . When Texas Ranger Sam Garrett (Adam West) proves his innocence and thwarts the quartet of nasty bounty hunters (The title , ¨The relentless four¨ refers : Ralf Baldassarre , Howard Ross , Robert Hundar , Jose Jaspe) from collecting the loot , they seek revenge . Meanwhile , a cattle baron called Terry (Roberto Camardiel) arrives in a little town , he gets into a game of exciting poker with Garrett after he has paid off his drovers , and he loses money steadily until his obstinate spouse (Paola Barbara wife to director Primo Zeglio) shows up in the place and takes him back to the ranch . At the ranch , Garrett and the cattle baron keep on playing after everybody else has gone to bed . As the cut-throat gunslingers enter secretly and rob his six-gun , and murder the cattle baron (Roberto Camardiel) with it in cold blood . The daughter (Dina Loy) and wife awaken in time to watch the chief of the villains ride off on Sam's white horse and vest , so that they assume that Sam is the murderer . Later on , the Rural Agent Sam is accused of killing , and he is detained by the sheriff (Luis Induni) and corrupt deputy (Chris Huerta) . All of them frame him for the death of the cattle baron .
It is a thrilling western that packs a story full of violence with four maniacal man hunters , fights , killings and subsequent suspense , choreographic duels , good dramatic pace , plot twists and slick direction . It is a medium-budget spaghetti western contains an intriguing premise in which a Texas Ranger is accused of murder , imprisoned and condemned to death penalty , escaping to investigate and to discover true killers , including red herrings , and results to be moderately entertaining , though drags at times , balancing ups and downs . Agreeable Chorizo-Spaghetti Western mostly produced by Spain and important Italian participation , being rightly shot by the Italian professional Primo Zeglio ; it doesn't follows the Sergio Leone wake , and being proceeded in American style , resembling USA westerns from the forties and fifties . Acceptable action sequences with rousing crossfire and spectacularly bloody shootouts . Charismatic performance for whole casting . ¨The Relentless Four" was performed by Adam West of Batman series , who also acted in another Spaghetti titled ¨Outlaws is Coming¨. And also starred by Robert Hundar who played a lot of Spaghetti/Paella Westerns such as "Man and a Colt" , "Three Ruthless Ones" , ¨Sabata¨, ¨Dallas¨, ¨California¨, ¨Brandy¨ and especially ¨cut-throats nine¨ . There appears the habitual secondaries in Spanish/Italian Western such as Luis Induni , José Jaspe , Raf Baldassarre , John Bartha , Fernando Bilbao , Jaime Blanch , Cris Huerta , Roberto Camardiel , José Canalejas , Lorenzo Robledo , Francisco Sanz , among others . Enjoyable and attractive musical score by Marcello Giombini . Atmospheric cinematography by Miguel Fernández Mila , but a perfect remastering is necessary . Being shot on location in Manzanares Del Real , Colmenar Viejo , Madrid , and Almería where in the sixties and seventies were shot lots of Paella/Spaghetti Western .
Slickly produced by Ricardo Sanz who also produced other Westerns as "I'll Kill Him and Return Alone" , "God in Heaven.. Arizona on Earth" , "My Horse, My Gun, Your Widow" and "Awkward Hands" . The pic was written by two Spaghetti experts , Federico De Urrutia and Marcello Fondato ; being professionally directed by Primo Zeglio . Primo was married to Paola Barbara who usually plays his films in secondary roles . He was a good professional , a craftsman who wrote and directed all kind of genres as Adventure : "Seven Seas to Calais" , ¨Genoneva De Bravante¨ , "Revenge of the Pirates", "Son of the Red Corsair" ¨, ¨Captain Ghost¨, ¨Morgan the pirate¨ , Sci-Fi : "Mission Stardust" , Peplum : "I Am Semiramis" , ¨Nero and Messalina¨ , ¨Rosmunda e Alboino¨ and Spaghetti : "Texas Ranger" and ¨Winchester One of One Thousand¨ also titled ¨Winchester Justice¨. "The Relentless Four¨ is mainly for fans of spaghetti westerns .
