Make sure you don’t forget that Day One, the first part of Torchwood’s third series, will air for the first time in the United Kingdom tonight at 9pm on BBC One. The episode will broadcast simultaneously in high definition on the BBC’s HD channel and it will see John Barrowman, Eve Myles and Gareth David-Lloyd return to play their respective characters; Jack, Gwen and Ianto. The official synopsis for Day One can be viewed below;

An ordinary day becomes one of terror, as every single child in the world stops. A message is sent to all the governments of Earth: "We are coming." But, as a trap closes around Captain Jack, the sins of the past are returning and long-forgotten events from 1965 threaten to reveal an awful truth.

Torchwood is forced underground as the government takes swift and brutal action. As members of the team are hunted down, Britain risks becoming a rogue state. Meanwhile, the mysterious and powerful 456 draws ever-closer.

Captain Jack, Gwen and Ianto are helpless as events escalate to such a degree that mankind faces the end of civilisation itself.

Each episode will have an approximate running time of sixty minutes and the next episode, Day Two, will transmit at 9pm on BBC One tomorrow night. The series will then continue to air in the United Kingdom every night this week on the same channel at the same time. Children of Earth will begin in Australia tomorrow and it will then premiere in both America and Canada on the twentieth of July. Will you be watching tonight’s episode of Torchwood?