The race to Ogden is coming to an end but when Cullen find out that the workers are missing it seems impossible to finish first.

Chang discovers Mei's secret and forces her to flee Truckee. Cullen's search for her brings new realizations while exorcising old demons.

Durant's plot to ransom himself takes an unexpected turn when Campbell arrives in town with the Cavalry to coordinate a rescue operation.

Cullen faces life-changing decisions in Utah as Truckee adapts to life without him.

The premiere sees the Swede's murderous rampage on the Hatch homestead resulting in a long overdue showdown with Cullen.

Cullen and Durant discuss with President Grant what will be the future of the railroad; The Swede goes ahead with his plan against the Mormons.

Cullen and Mei take a dangerous journey through the California wilderness, escorting precious cargo. Eva nurses Louise back to health.

Unexpected violence strikes during the festival of Tin Hau Don in Chinatown. Cullen confronts The Swede. Durant involves Maggie in his latest scheme.

In the wake of the violence, Cullen solves a Chinese labor strike; Mickey is pulled deeper into Union Pacific Business.

Cullen contends with violence in Chinatown set off by disgruntled railroad workers. The Swede manipulates Phineas in his plot against the Mormons.

Cullen enlists new workers to help him move a locomotive on a sled; Cullen and Fong must work together; Swede and Phineas fight for survival after being banished to the high country.

Cullen finds a route through the mountains to Ogden, Utah.

As the railroad prepares to leave Cheyenne behind after Sherman Peak; Cullen returns to Fort Smith to get his family.

Cullen struggles with Ruth's unexpected decision; Louise risks her reputation to fight for a story she believes in.

Cullen and Durant work together to save the life of a criminal; Louise supports Ruth as she copes with a loss.

Cullen, Durant and Campbell come together in order to discuss a means by which to provide protection to the citizens of Cheyenne. They must return a sense of well-being to the town after a disturbing act of violence takes place.

Cullen attempts to make a stand to free Durant and the rest of the prisoners after Campbell decides to transport them back east. The only thing standing in his way is Snow and his men.

Naomi's unrest forces Cullen to take her and William back to the Mormon settlement at Ft. Smith. Campbell deputizes several undesirables in response to the deaths of his Marshals. The Swede is forgiven for his wrong-doings.

Durant seeks revenge for his attack. Bear Killer (Elam) returns to Cheyenne trying to sell the female slaves he has. Due to Campbells presence, Cullen and Eva attempt to convince Elam of where he is and what will happen if he sell slaves.

We follow Bear Killer (Elam) as he is cared for by the Comanche after a bear fight. He becomes part of the tribe as they attack incoming blue coats. Bear Killers growing confusion forces him to seek out the railroad.

The arrival of a dangerous stranger stirs up old feelings in Cullen and puts his family at risk. The Swede faces consequences at Fort Smith.

Cullen attempts to find a way for the railroad to pass over the mountains for Durant. As a Mormon, Naomi has her own struggles settling into Cheyenne. Brother Hatch continues to suspect the Swede of fraud and murder.

Cullen returns to Cheyenne. After being considered dead his return is a shock for many. Bohannan meets a few old friends and makes new enemies whilst trying to get his old job back from Durant.

Cullen challenges The Swede as he plans his exit from Fort Smith. A new adversary arrives and makes his presence felt in Cheyenne.

Cullen awaits the birth of his baby, laboring under The Swede's thumb at Fort Smith. Durant deals with the fallout from a railroad accident.

Cullen deals with consequences; Elam mounts a rescue attempt; Durant receives the U.P. board ahead of the deadline.

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

Cullen seeks help from Durant in winning his workers back from the Mormons; Sean and Mickey are haunted by their past.

A cholera epidemic breaks; Cullen must locate fresh water before his employees perish; Durant faces political fallout.

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

Cullen helps Elam track down a dangerous criminal; the town prepares to move down the tracks.

Cullen and Elam try to secure a new lumber source following a railroad accident; Durant tells Louise a secret about Cullen.

Cullen and Elam search for their stolen food on the prairie; a stranger's arrival threatens Elam's family.

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

After a hard winter, Cullen and Elam travel to New York to secure their positions on the railroad as Durant fights for his legacy from prison.

As the town celebrates, Cullen prepares for battle and then fights to save the railroad.

A new arrival in Hell on Wheels creates turmoil.

Cullen seeks justice in the aftermath of tragedy.

Durant must save the railroad while fighting for his own life. Meanwhile Cullen fights to save an old friend.

Cullen's past haunts Hell on Wheels, leaving the fate of the railroad hanging in the balance.

After tragedy strikes one of their own, Cullen must diffuse an internal threat to the railroad.

Mickey and Sean's life hangs in the balance as Cullen tries to keep order.

Durant must confront a dangerous threat to Hell On Wheels. Meanwhile, a horrible crime forces Lily and Elam to strike a deal to bring justice.

Cullen & Elam find themselves on opposite sides of the law as Durant & Lily push the railroad further west.

Durant and Lily conspire to gain investors' interests. Sean and Mickey McGinnes exact their own revenge on The Swede. Elam and Eva each begin to see the future differently. Cullen tracks down the elusive Sergeant Harper.

Cullen and the search party find the natives who attacked the surveyor's camp and later derailed a train; Elam and Eva discuss their future, before getting a strange visitor; and the railroad crew reaches the important 40-mile mark.

A train is derailed by the Cheyenne. Durant orders Cullen to lead a team to track them. Lily moves out of Durant's coach and into her own tent beside the brothel. Tension mounts for ...

Durant and Lily travel to Chicago - he, to further discuss the railroad with Senator Crane; she, to meet with her deceased husband's family. The Irishmen from Hell On Wheels prepare to hang Elam. Cullen interferes and helps him escape.

Durant attempts to end ongoing negotiations with the Cheyenne by challenging them to a competition.

Joseph Black Moon and Reverend Nathaniel Cole travel into Cheyenne territory in hopes of a peace talk. Lily Bell and Thomas Durant discuss the future of the railroad construction. Cullen ...

Cullen closes in on the Sergeant. Durant pursues a hidden agenda while helping Lily recuperate.

Cullen's search for the sergeant is diverted by an unexpected obstacle. Durant organizes a search party to retrieve the missing Lily Bell.

Cullen fights for his life as he answers for his deadly actions. Lily struggles to survive in the wilderness, as Durant attempts to spin tragedy for political gain.

A former confederate soldier journeys to the transcontinental railroad to seek vengeance.