Jon Stock has written an excellent spy novel. The approach is similar to that of le Carre, but Stock's yarn does not suffer from the murkyness so common to le Carre's plots. "Dead Spy Running" centers on Daniel Marchant, MI6 agent whose father has recently been removed as the head of the same organization. Now, following a tense incident which mars the London Marathon, Daniel himself is suspected of disloyalty.Daniel's love interest, Leila, nominally an MI6 agent herself, is suspected of divided loyalties, as well. A low-key - but nasty - rivalry exists between MI6 and MI5; another troubles relations between MI6 and the CIA, and both conflicts are portrayed with great skill. Best of all, Stock helps the reader keep it all straight. Jon Stock, Weekend editor of the Daily Telegraph in London, must have decent sources in or around the spy community; his writing has a real ring of authenticity. Recommended.