A mysterious symbol is the key to a murder case in this classic suspense tale by the Edgar Award–winning author. Gordon Craigie and Department Z-the squad of top-secret detectives within British intelligence-are embroiled in a desperate investigation involving drugs and murder. How will the department uncover who is behind the mark of the crescent? Will they solve the case before the anonymous culprit claims another victim? The trail starts...

The first in the series featuring British intelligence's elite detectives by the Edgar Award–winning author. Millions of lives are at stake if a sinister international conspiracy succeeds. It's up to England's elite detective agency, Department Z, to make sure that doesn't happen. They've got to keep things quiet, too. Discretion is something the Hon. James Quinion knows only too well-it's all part and parcel of being a member of the secret...

A World War II thriller by a multimillion-selling, Edgar Award–winning author. As plans for D-Day loom large, the agents of Department Z-a secret detective unit within British intelligence-are working overtime to halt the leaking of intelligence to Berlin. Meanwhile, three cousins undertake their own covert operation: meeting in a cottage in Guildford to discuss a dark family matter in secret. As these two seemingly unrelated events collide,...

An international criminal spells trouble for the agents of Britain's Department Z, in this suspenseful mystery from an Edgar Award–winning author. Marius Krotz is notorious for his ability to cause a stir. A former revolutionary turned right-hand-man to the king of a small European country, he is feared as much for his unscrupulous manner as for his dangerous past. He's planning something big, and intelligence agencies across Europe have him...

International blackmailers are scheming to rupture relations between Britain and the United States-but Bill Loftus of Department Z is hot on their trail . . . With America's most powerful industrialists, British peers of the realm, and agents of unknown power all entangled in a conspiracy, international safety is at risk. But unraveling this global plot quickly becomes personal for Bill Loftus when the blackmailers murder someone dear to him. As...

A tale of murder and international intrigue from the multimillion-selling, award-winning author. Looking forward to a relaxing afternoon away from the trials of Department Z, Bob Kerr eagerly awaits the arrival of fellow agent Lois Dacre. He is temporarily amused by the sight of a passerby oddly dressed in an enormous fur coat on an exceptionally warm day. Then, interrupted by a call from Agent Craigie, Kerr is alerted to new developments in...

The detectives of Britain's Department Z look into a murder at an exclusive club. Sir Basil Riordon is mysterious, frightening, and immensely wealthy. But is he also a killer? As head of England's elite secret service, Department Z, Gordon Craigie has to find out, but it won't be an easy investigation with so many important people involved. A member of an exclusive London club has been poisoned, and Riordon or his son, Marcus, may be involved....

A terrifying international plot threatens the agents of Britain's Department Z in this tale of suspense from an Edgar Award–winning author. Leopold Gorman studies the World Economic Conference with interest-and then picks five rich and powerful men to bring his plan to fruition. If any one of them shows reluctance to fall in with his scheme, he'll be dead within the hour . . . Gordon Craigie, chief of British intelligence, is the only thing...

It's a race against time to rescue a kidnapped scientist in this suspenseful tale by an Edgar Award–winning author. The world is under threat of destruction. As the politicians hedge their bets with atomic weapons, it seems no one is safe. The only hope? A brilliant professor who knows how to make nations and people invulnerable to atomic attack. The only problem? Professor Julian Conway has been kidnapped by power-hungry men wishing to use...

The greed of one man leads to the death of others in this action-packed mystery featuring British intelligence's secret detective squad. When two impossibly rich oil tycoons are found murdered in their own homes, a matter of life and death becomes one of national security. Jim Burke of Department Z is called in to stop this ambitious murderer from killing again-but it isn't long before Burke's investigation is derailed by an attempt on his own life. ...