Death in the Trees — John Creasey

A British secret agent must find a killer to clear his name in this classic crime novel by the author of the Department Z series.

Patrick Dawlish is many things: a fruit farmer, a boxer, a war hero, a British Secret Service agent, and, of course, a husband. He is not, however, a traitor, as Prof. Gurth Haffmeyer has everyone believing. The real traitor -- who trades government secrets and is responsible for the deaths of many loyal British and American agents -- is Haffmeyer himself.

In order to clear his name, Dawlish travels to a forest in America's Pacific Northwest to get Haffmeyer to talk, but when he arrives the professor is already dead. Now, Dawlish's only lead to find the killer is Haffmeyer's beautiful wife, Vanessa. The trouble is that she's now pointing a gun at Dawlish . . .