第 4 季 共 10 集
播出时间：2011年7月9日
第 1 集 The New World
播出时间：2011年7月9日
Convicted child killer Oswald Danes is executed for his crimes and when he miraculously survives his fate a series of events is set in place that forces CIA Agent Rex Matheson to investigate a global event. His investigation leads him from America to Wales and an old defunct British Institute - Torchwood.
第 2 集 Rendition
播出时间：2011年7月16日
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.
第 3 集 Dead of Night
播出时间：2011年7月23日
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.
第 4 集 Escape to L.A.
播出时间：2011年7月30日
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.
第 5 集 The Categories of Life
播出时间：2011年8月6日
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.
第 6 集 The Middle Men
播出时间：2011年8月13日
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.
第 7 集 Immortal Sins
播出时间：2011年8月20日
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.
第 8 集 End of the Road
播出时间：2011年8月27日
Jack faces a showdown with a man he thought was long since dead, while Rex takes extreme action to prevent the collapse of society.
第 9 集 The Gathering
播出时间：2011年9月3日
With the whole world in recession, a defeated Torchwood team take their last chance and make a deal with the devil.
第 10 集 The Blood Line
播出时间：2011年9月10日
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.
