S01E01: 'Everything Changes'

Policewoman Gwen Cooper is at what she believes to be a routine murder scene when she is ordered out of the area. The mysterious 'Torchwood' are on site - and they have priority clearance.

Sneaking back inside, she is shocked when the Torchwood gang - led by Captain Jack Harkness - bring the victim back to life, albeit temporarily.

So begins her quest to find out everything she can about the organisation and Captain Jack.

When she finally gets the answers she has been searching for, Captain Jack takes measures to ensure she won't remember them for long.

But he doesn't count on one of his own team throwing a spanner in the works...