But Torchwood do not always see the effects of their actions. What links the Rules and Regulations for replacing a Torchwood leader to the destruction of a shopping centre? How does a witness to an alien's reprisals against Torchwood become caught up in a night of terror in a university library? And why should Gwen and Ianto's actions at a local publishers have a cost for Torchwood more than half a century earlier?
For Torchwood, the past will always catch up with them. And sometimes the future will catch up with the past. . .
Featuring stories by writers for the hit series created by Russell T Davies for BBC Television, including Joseph Lidster and James Moran, plus Andrew Cartmel, David Llewellyn and Sarah Pinborough.