The mysterious Captain John Hart is determined to wreak havoc, and needs to find something hidden on Earth. With Gwen's life in danger, and cluster bombs scattered across the city, whose side is Jack on?

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

Toshiko falls for a handsome soldier who is trapped out of his time zone, and the future of mankind ends up being in his hands as a crisis that Torchwood foresaw 90 years ago nears its climax.

Rhys discovers the truth about Torchwood and becomes part of the team as they investigate a mysterious alien meat supply. Meanwhile, Gwen feels guilty that Rhys has been put into so much danger.

Adam, an alien in the guise of a personable young man, is a 'memory manipulator' who implants false memories into the Torchwood team, leading them to believe he is an old friend. Gwen is induced to forget Rhys and Jack recalls painful memories of his brother before he exposes Adam. The team take tablets to restore their memories, in the process 'killing' Adam, who fades away.

Captain Jack calls in Martha Jones to investigate mysterious deaths. When the trail leads to a sinister medical testing centre Martha must go undercover, but have Torchwood underestimated how far the testing centre will go to reach medical breakthroughs?

Deep in shock, the Torchwood team have to face their darkest hour. In an effort to put things right, Captain Jack Harkness unleashes a primal force that uses Torchwood as a conduit to wreak havoc across Earth, aided by the Weevils and their newly appointed king.

A victim of his new-found circumstances, Owen Harper believes he needs absolution. Will the lonely girl on the rooftop help him, or will it be a mission to retrieve an alien device that is proving more lethal by the second?

Juggling work with her hen night the day before she's due to marry, an alien shapeshifter leaves Gwen carrying more than she bargained for. As everyone gathers for the ceremony, Jack must destroy her big day unless one of the three mothers present finds a means to stop him.

When an old cinema reopens, past horrors emerge to stalk the streets of Cardiff. As bodies are found caught between life and death, Torchwood must act fast. Who are the Night Travellers, and how can Torchwood capture these mysterious killers?