Nicholas Farrell

A is for Andover, the town where Mrs Ascher is found battered to death. B is for Bexhill, where Betty Barnard is strangled. C is for Churston, the tiny Devonshire village where Sir Carmichael Clarke is murdered. Beside each body lies a copy of the ABC Railway Guide - open at the relevant page. The police are baffled. But the murderer has already made a grave mistake. He has challenged Hercule Poirot to unmask him.

Old wounds are reopened when Lynley investigates the disturbing death of his godson, more than a decade after the boy's disappearance.

When every single child on Earth stops, Torchwood is thrown into a world of terror. 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.

The team is forced underground when the government takes swift and brutal action. With members of the team being hunted down, only Lois holds the key to Torchwood's salvation. But she is helpless as her superiors make plans for the mysterious Floor 13.

The eyes of the world turn to Britain, as the 456 announce ''We are here''. As a pillar of fire descends upon London, the members of Torchwood must battle to protect their own families as the fight gets personal. But will Clem''s memories destroy everything?