After Walker and the gang put an end to a baby kidnapping ring, Walker and Trivette must rescue a group of people including Alex and a young boy who are trapped in a collapsing building.

At a senator's behest, Walker must stop a criminal genius who has infiltrated federal law enforcement computer systems.

Four women escape from a bus taking them to Gaitesville Prison. Two of the women and their boyfriends go back to robbing banks. The other two are on the run and end up giving Gage a ride. Alex checks into the case of one of the women, Laura Pope. It looks like her case was mishandled by her attorney.

The Chairman continues to use knowledge gained from his computer hacking to terrorize federal agents, and manages to keep Walker at bay.

Walker tracks down a hijacked ambulance containing an urgently needed donor liver.

A rookie officer framed for departmental corruption takes Alex hostage.

Walker investigates the mystery of a statue that appears to cry real tears. Meanwhile, Gage goes undercover to bust the dealers of a designer drug called "white buffalo."

While kickboxing friends of Walker's visit, the son of a recently jailed mob boss vows revenge on those who put him there--a list that includes Alex.

Walker and Alex are so excited about the arrival of their new baby that they start decorating the nursery with everything a baby could want and more. Meanwhile, the Rangers stumble onto a movie set and become stars for a day, and Walker and Trivette participate in a charity motorcycle ride. (Taken from the CBS Homepage)

Walker begins making real progress in ending The Chairman's reign of terror.

Cooke and Gage go undercover in a nightclub to help the owner thwart a group of gangsters looking to take ownership.

Sydney and Gage use their undercover skills posing as bikers to infiltrate a meth-making gang. (Taken from CBS Homepage)

A professional wrestler friend of Trivette's dies, and the Rangers go undercover to investigate the truth about his death.

Walker tries to keep a promising young boxer from falling in with the wrong crowd. Meanwhile, the Rangers seek to stop an Ecstasy ring.

In a desperate bid to avoid capture as Walker closes in, The Chairman kidnaps Alex.

In the two-hour season finale, a notorious gang Walker put away returns for brutal revenge. The gang escapes from prison and targets each Ranger. As his closest friends are marked for death, Walker is torn between catching the killers or helping his wife, who is rushed to the hospital when she goes into labor. Meanwhile, Trivette reunites with an old flame and prepares to get on one knee and ask for her hand in marriage, and questions are finally answered regarding the infamous Hayes Cooper.

When a lawyer preparing to file a scathing police brutality lawsuit is found dead, Walker investigates.

The Rangers have six hours to rescue a billionaire's daughter before she is killed—live—over the Internet.

Walker and the Rangers try to intercept a huge black-market arms deal where ""blood diamonds"" are traded for weapons. At the same time, and outbreak of the Ebola virus threatens Alex. (Taken from the CBS Homepage)

To help stop gang related activites, Walker organizes basketball tournaments amongst a group of interracial kids.

Workers at a Medieval-themed restaurant moonlight as fine art and jewelry thieves.

In the two-hour season finale, a notorious gang Walker put away returns for brutal revenge. The gang escapes from prison and targets each Ranger. As his closest friends are marked for death, Walker is torn between catching the killers or helping his wife, who is rushed to the hospital when she goes into labor. Meanwhile, Trivette reunites with an old flame and prepares to get on one knee and ask for her hand in marriage, and questions are finally answered regarding the infamous Hayes Cooper.

Alex discovers an abandoned infant, and she and Walker become instant parents.

When high-tech carjackers wreak havoc in Texas and kill Gage's old high school sweetheart, the Rangers make it their mission to bring the murderers to justice, while Gage learns to deal with his disability with the love and support of Sydney. (Taken from CBS Homepage)