Death Stands By — John Creasey

It all started with the murder of a foreign ambassador in a deserted country mansion . . .
 
Tensions are running high in Europe -- and it's crucial that the killers responsible for this baffling murder are stopped before they bring about a crisis of unspeakable proportions. It's time for British intelligence's best-kept secret to step in.
 
The agents of Department Z work tirelessly, grappling with a ruthless group of organized assassins. The clock is ticking, because these murderers aren't satisfied with just one casualty. Their goal is war . . .
 
Death Stands By is a fast-paced adventure that blends sharp detection with international intrigue, from the multimillion-selling, Edgar Awardâ€"winning author.