Build a movie plot around this: Why does Jake set a trap and kill another gang? They were intent on stealing the strongbox.
In 1909, there is a raid on the McCandles family ranch by a gang of ruthless outlaws led by John Fain. They massacre the ranch hands and kidnap Little Jake, the grandson, leaving a ransom note and heading back for Mexico, where they have been hiding out. Martha, the head of the family, is offered the help of both the army and the Texas Rangers in hunting the gang. She replies that this will be "a harsh and unpleasant kind of business and will require an extremely harsh and unpleasant kind of person to see it through." In consequence, she sends for her estranged husband, the aging Jacob "Big Jake" McCandles, a near-legendary gunfighter who wanders the west with his Rough Collie, simply named Dog.When Jake arrives by train, he and Martha discuss a plan to take the ransom to the kidnappers, a million dollars in a big red strongbox, although Jake warns that, "Pay or not, we run the risk of never seeing the boy again". Then his son Michael rides up on a motorcycle, bringing word that he has seen the kidnappers in the Chilicothe Canyon. The Texas Ranger captain is present and offers the services of his men, equipped with three REO touring cars. They, however, are ambushed and their cars put out of action. Jake, preferring the old ways, has followed on horseback, accompanied by an old Apache associate, Sam Sharpnose. He is now joined by his sons, Michael and James, with whom his relations are tense because of his desertion of the family ten years before.That night, Fain rides into their camp to make arrangements for the handover, telling Jake that they will "send the boy's body back in a basket" if anything should go wrong. Both men deny any personal stake in the business, each claiming to be "just a messenger boy". The family party crosses into Mexico the next day and checks into a hotel. Knowing that they have been followed by another gang intent on stealing the strongbox, Jake sets a trap for them and they are all killed. During the attack, the chest is blasted open, revealing clipped bundles of newspaper...