A farmer spots the two boys and alerts the sheriff, but Heyes and the Kid jumps on a train and manage to get away. On the train they meet Harry Briscoe, who's now fired from Bannerman Detectives Inc. But when the posse telegraphs ahead, Heyes quickly reinstates Harry - and the boys become his prisoners.

The boys are hired by a ranch owner as trappers, but when they meet his wife, she recognizes the Kid. The ranch owner and his wife tries to act natural, and sends Heyes and the Kid out into the hills trapping. But they also send a professional hunter after them.

Heyes and the Kid have been promised $500 if they arrange a meeting between ""Big Mac"" MacCreedy and his longtime competitor, Armendariz, in order to end the feud. Instead they are captured by Armendariz' men and driven off his land.

With McCreedy's $5000 and ready to go to Santa Marta, the boys turn back to Texas, to get their friend Clementine. When they get there, they decide that it would arouse less suspicion if one of them were married. A game of poker seals the Kid's fate, but before they can leave, they are shot at.

Heyes and Curry are set up as witnesses for a man who kills two bushwhackers for his own reasons.

The boys are waiting for an old friend who wants a favour, in a small town called Buffalo. But while they wait they cross paths with two deputies who don't seem to want them there. That is, until Heyes and the Kid discovers that it's all on the sheriff's orders. The reason he doesn't want them there is that they can blow his cover, being an ex-criminal gone good.

When the Kid travels alone and seems destined to be thrown in jail for not having enough money to pay for his drink, a mild-mannered female teacher rescues him. But as he tries to return the favour, the Kid is kidnapped.

After nearly three years of staying out of trouble, for the sake of the amnesty, it's finally time. But when Heyes and the Kid meet sheriff Trevors, they find out that the governor has been removed from office.

After the Kid wins another duel (over a man who claimed the Kid was cheating), the boys are contacted and offered a job by a man called ""Doc"" Donovan. They are to come with him into Mexico, to rescue a hostage from Mexicans who only want their rightful money.

Confusion reigns after Smith and Jones stop to help a wounded man who calls himself McGuffin and asks them to deliver a package of perfect counterfeit $20 plates for him.

"Witness to a Lynching" is the 49th episode of Alias Smith and Jones.

The boys accept the offer of a vacation - but doesn't realize that the activities during this vacation involves catching and taming wild horses.