Terror Cops

In his two-decades-long career with the Metropolitan Police, Detective Sergeant Harry Keeble has hunted child murderers and child abusers, drug dealers and hit men. And then, in response to the call to arms in the wake of the July 2005 London bombings, he transferred from Hackney''s Child Protection Team to S-Squad, an elite counter terrorism unit.

From day one he was thrown into the front line of...