S4 E1 • Sur la piste du vengeur

An escaped prisoner goes on a spree, killing people who helped put him away--a list of people that includes Walker.

S4 E2 • Un flic à Miami

Walker poses as a cocaine dealer to help break up a drug trafficking operation.

S4 E3 • Sauvons la Terre

Walker must stop eco-terrorists out to destroy an oil rig.

S4 E4 • Le retour de Bonnie et Clyde

Walker must come to the rescue when C.D.'s niece is kidnapped by her ex-boyfriend and forced to go on a spree of bank robberies.

S4 E5 • Mauvaise passe

Walker and Trivette investigate the death of a high school football coach.

S4 E6 • Magie rouge

A malevolent medicine man resurrects after desecration of his burial ground.

S4 E7 • La justice de Walker

For years Walker has believed that the man who murdered his parents at a carnival in the sixties was dead, but after visiting with one of them men who had attacked them that night, Walker realises that his parents' killer has been living the life of Riley for the past few years, and he needs the help of an old cowboy who witnessed the crime to track him down.

S4 E8 • Un jugement expéditif

Walker protects a mentally disabled boy, accused of killing a lady, from being lynched by his community.

S4 E9 • La Rivière infernale - Partie 1

Alex and Walker's whitewater rafting trip becomes a working vacation when one of the rafters is murdered.

S4 E10 • La Rivière infernale - Partie 2

Alex and Walker's whitewater rafting trip becomes a working vacation when one of the rafters is murdered.

S4 E11 • Colère dans les rues

Feuding gangs divide a neighborhood at Christmas.

S4 E12 • Le cœur a ses raisons

Walker and Trivette must protect the last surviving witness for a mob trial, who turns out to be an ex-boyfriend of Alex.

S4 E13 • Mission de paix

Some Irish militants are trying to kill a peacemaker.

S4 E14 • Haute sécurité

Undercover in a prison, Walker is left alone when the corrupt warden discovers Trivette and removes him.

S4 E15 • La grande peur d'Alex

Victor LaRue having been released from prison by the parole board because of good behavior,seeks to take revenge on Alex Cahill,and Walker.

S4 E16 • Abus de pouvoir

Alex's attempt to help the victom of spousal abuse gets complicated when the victim's husband is released from jail.

S4 E17 • Au-delà de la frontière - Partie 1

Walker poses as a peasant to track slave-labor smugglers in Mexico.

S4 E18 • Au-delà de la frontière - Partie 2

Walker poses as a peasant to track slave-labor smugglers in Mexico.

S4 E19 • Duel sans merci

The brother of an illegal arms dealer killed by Walker gets revenge by making him fight deadly martial artists.

S4 E20 • Gros plan sur les rangers

Trivette tries to impress the reporterette following him around for the ""Behind the Badge"" tv show, but all the action is going on with Walker.

S4 E21 • Amnésie

A blow to the head leaves Walker with amnesia during an undercover operation to uncover money laundering at a casino.

S4 E22 • Un ranger peut toujours servir

The existence of the Texas Rangers is threatened by budget cuts.

S4 E23 • Piège dans les bois

Walker and his friends are on a fishing trip in the wilderness in a cabin run by Hank Cotton an old friend of Walker and CD. Meanwhile a group of Drug Runners ran by Glen Larkin and his younger brother Chip lay seige to this place and when they find an elderly couple who promise not to ever testify against them. However Glen shoots them dead anyway because no matter what he never leaves behind a witness. Meanwhile Alex is taking a ride with Bobby; Hanks son who is the Park ranger and they see the Larkins pick up a case of heroin Alex recognizes them and despite her warning to wait for Walker Bobby knows that they would be gone by then and orders them with their hands up unaware that one of Larkins men is sneaking up behind Bobby and shoots him. Alex narrowly gets Bobby back to the truck and head back to the lodge with the Larkins closely behind Walker and Trivette hear the gun shots Trivette thinks it is hunters but Walker knows that hunters don't use Automatic Guns. Once Alex and the

S4 E24 • Le flic qui venait du froid

When warehouse robberies get linked to the Russian mob, the Rangers call on the Moscow police for assistance.

S4 E25 • Sauvetage à Middle Creek

While attempting to help a small boy trapped underground, Walker finds himself buried alive.

S4 E26 • Le défi du tueur

A serial killer taunts C.D. as he prepares for induction to the Texas Ranger Hall of Fame.