A Ianto themed episode Ianto Jones hides a very big secret at Torchwood - his half-converted girlfriend from the Canary Wharf Battle - down in the basement. He is quick to hire a Japanese doctor who believes he can "cure" her. But things soon go wrong, and the Cyberwoman's destructive powers are released to the whole of Torchwood. Upgrading is compulsary.

It's Gwen's first day on the job, and it's not going very well. After accidentally releasing a mysterious gas from a comet that landed, a new type of alien is let loose on the streets - an alien that's addicted to sex. Torchwood must find the inhabited body, and prevent anymore deaths from the violent form of sex.

An Owen themed episode Weevils are appearing all over the streets of Cardiff, and then disappearing again - but not by alien forces. People are abducting them, and using the Weevils for their own purposes, so Owen investigates.

An old cinema reopens and mysterious horrors of the past return to Cardiff. Why are people trapped between life and death, questions are asked about the Night Travellers, and what Torchwood can do to stop them.

Jack catches up with a very old friend of his, who is investigating fairy sightings in the local wood. After having visited her, Torchwood are informed of a man's mysterious death in a prison cell. Then, Tosh uncovers a series of localised, extreme weather patterns. Nobody at the organisation is sure of these events, or how they may be connected. Except Jack, who has witnessed the creatures causing this, almost a century ago.

Torchwood goes on the run and finds a new enemy, but as they launch a raid on PhiCorp headquarters, Jack must confront the mysterious Oswald Danes.

Torchwood relocates to LA to sneak into PhiCorp's headquarters to find some useful information, unaware that their mission has been compromised. Elsewhere, Oswald and Jilly face a new adversary in Ellis Hartley Monroe, who is using the Miracle Day for her own agenda.

With Gwen, Rex and Esther trapped on both sides of the Atlantic, it's a race against time as Jack goes straight to the heart of the conspiracy.

A Toshiko themed episode Tosh meets an unusual woman, Mary, at a bar, who gives her a strange pendant. She is upset, yet amazed by what she now has - the ability to read people's minds. However, Tosh finds this terrible curse, that contains her friends darkest secrets, must be broken. So she asks for help from Mary, the only person who knows, but first, Tosh has to get her into Torchwood.

Gwen must fight to protect her family and takes a terrifying journey, covering both miles and decades, as the long history of the Miracle is revealed.

Jack faces a showdown with a man he thought was long since dead, while Rex takes extreme action to prevent the collapse of society.

Whilst chasing a man, Gwen retrieves an unusual machine that allows the user to see back into the past. It is considered dangerous, and no members of Torchwood are permitted to use it. But Owen has other plans, and witnesses a violent murder that took place over forty years ago. Using the information he gathered, Owen starts to track down the still-living murderer.

When a burglary turns into a slaughter, Torchwood suspect alien involvement. Who is Beth, and can she be as innocent as she seems? But when the investigation escalates into a city-wide assault, Jack realises that the whole planet is in danger.

As the Torchwood team is reunited, Jack realizes he's the most vulnerable man on Earth. A flight to the United States turns into a desperate battle for survival.

With the whole world in recession, a defeated Torchwood team take their last chance and make a deal with the devil.

WPC Gwen Cooper is at the scene of a brutal murder, when the "special ops," known only as Torchwood, arrive. After witnessing the group bring the dead man back to life, Gwen goes in pursuit of this mysterious organisation, only to see weirder things than she could ever imagine existed. Soon after, she begins to regret giving in to her curiosity, when she meets Captain Jack Harkness.

When Rhys discovers the truth about Torchwood, he helps the gang to find the source of an unusual alien meat supply.

Torchwood goes undercover and discovers the terrible truth behind the Miracle. The enemy is closing in, and death is about to make a shocking return.

Whilst investigating a group of unexplainable deaths in a village, the Torchwood team are separated. Discovering further, Jack, Gwen and Owen find a scared man, hiding from the thing responsible for the murders. But Tosh and Ianto go that one step extra, and locate the killer, who wants them as their next victims.

Gwen awakes on her wedding day to find she has been impregnated by a shape-shifting alien male. With it's life-partner eager to retrieve it's mate at the cost of Gwen's life, the team race to intercept her as Gwen decides to go through with her marriage at a secluded location with all of her family present

As the Torchwood team launch a final, desperate mission against the seemingly undefeatable Three Families, they realize it may come down to the ultimate sacrifice.

A Suzie themed episode Using the Resurrection Gauntlet that former Torchwood member Suzie Costello originally had, the team are able to bring a number of murder victims back to life. However, these all have a link with the now-deceased Suzie, and the group have no choice but to bring her back. After the process goes wrong, and permanently keeps her alive, Suzie manipulates the naïve Gwen into taking her to see her father.

Eugene Jones wakes up, finding himself lying on the middle of a road. He then discovers that he has been the victim of a hit-and-run incident, and is, now, not only dead, but invisible. Eugene recalls events leading up to his death, involving a mysterious alien eye. Simultaneously, Gwen investigates the suspicious circumstances around his fatality.

With the Rift having been opened, people and objects throughout time are falling through it, and being spread across the world. "The thing in the darkness" has finally come, and Jack realises that he is the only one who can save planet Earth from the destruction that "the son of the Beast" will cause.

Toshiko falls for a handsome soldier, trapped out of his time, who unwittingly holds the key to saving the world. With an old hospital haunted by ghosts from 1918, a crisis foreseen by Torchwood 90 years ago is about to reach its climax. Time zones are colliding and with life and death decisions to be made, will Torchwood be able to stop an explosive end for Cardiff?