The Best Episodes Written By John Wirth

Durant files an injunction against Union Pacific, threatening Cullen's position; Elam deals with a dangerous newcomer.

With General Grant's deadline only two days away, a gang of riders attacks Cheyenne while Cullen and Elam pay Durant a visit.

An unexpected roadblock forces Cullen to make a difficult choice as a reporter arrives in Hell on Wheels. Elam struggles with his new boss.

Navajo Tribal Policeman Joe Leaphorn investigates the death of a man involved in a mysterious cult. While Jim Chee, moonlighting as a PI, works a case of his own. When their investigations collide Leaphorn and Chee find themselves in grave danger.

Leaphorn and Chee discover evidence that connects their cases, only for Leaphorn to realize justice won't be easily served. Meanwhile, Manuelito prepares for a big life change.

Lt. Joe Leaphorn and Sgt. Jim Chee investigate the disappearance of a Navajo boy. Manuelito makes a sinister discovery while adjusting to life on the border patrol. An FBI agent comes to solve a case linked to Leaphorn's recent past.

After a violent attack on someone very close to Anna, she delivers a message that the Vs don't feel safe and will be leaving, while she also gives a list of possible Fifth Column members to Chad hoping he'll investigate to help in finding them. Meanwhile, Erica and the team try to track down a scientist who may have created a weapon that the Visitors are afraid of.

Erica, Father Jack and Hobbes realize that the Vs know names and addresses of The Fifth Column members and must take drastic measures to protect them, while Ryan finally reveals to Val that he's a Visitor. Chad, with the camera rolling for "Prime Focus", begins the process aboard the Mothership's Medical Bay to have his aneurysm removed.

Sarah visits Miles Dyson's widow to find the creator of Skynet. She leads her to a man named Andy Goode who used to work with Dyson and is building a chess-playing computer named "The Turk." John and Cameron try their best to fit in on their first day at a new high school.

In a hospital, Melinda encounters a woman who wants to determine what caused her death during a surgery.

Cullen and Fong find themselves in peril as they transport a locomotive over the Sierra Nevada mountains. The Swede gains Phineas' trust.

Derek and Sarah must outwit Cromartie after he kidnaps Charley's wife, and they must weigh the consequences in rescuing her. Meanwhile, John finds himself unable to choose between Cameron and Riley.

A risky power play puts Uncle Six at Kai's mercy. An unburdened Tommy attempts to get his life together. Zan makes her Triad ambitions known.

Nash discovers his life savings is gone when his accountant invests in a deal cooked up by "Bombshell" Tamara Van Zant. While trying to remodel the bathroom himself, Joe burns down his house and takes Nash up on his offer to move into Lisa's. Nick decides to take scuba lessons.

A botched restaurant order makes Kai a target of Triad members, who are unaware of his family connections -- and his new status as the Wu Assassin.

The Connors visit a town connected to the destroyed factory; Weaver sends a man into town in search of a survivor.

Sarah finds that the strange dreams she's been having while she sleeps are slowly beginning to creep into her waking life, but she has no idea what the dreams mean for her and John. Derek and Jesse investigate a possible Skynet conspirator.