A brilliant young electronics expert is killed by a car bomb seemingly meant for the head of the Foreign Office's Middle-Eastern Section. Intelligence officer Hugh Roskill is sent by David Audley on an investigation that takes him from London clubland to the Hampshire countryside, and deep into the complexities of Middle Eastern politics, to find the answer to two questions: who was the real target of the bomb? And what is Alamut?

When ex-Major Ed Parker of the US Army is pushed over a cliff at Pointe du Hoc following the D-Day anniversary, a crisis is sparked off in British Intelligence. The cream of the Secret Service gather: Dr Audley, Oliver St John Latimer, Commander Cable, Dr Paul Mitchell. But none will take on the case. Why is the investigation left to inexperienced Elizabeth Loftus? Is there any truth in the old rumour that Parker was a KGB double agent? Elizabeth must ponder these and many other questions as she prises the lid off a can of worms 40 years old - and suspicion begins to fall on her most...

Even in the era of glasnost a defector is worth having, especially if he is a senior computer specialist in Russian military intelligence. But when the defection goes wrong, the British are left with three bodies and two inadequate clues to the nature of the information they might have been offered, and which now lies buried somewhere in the collective memories of David Audley and his one-time colleague Major Peter Richardson. But what is the secret Audley shares with the half-Italian Richardson, now frightened into hiding somewhere in Italy?

What does the chairman of the new Atlantic Defence Committee have to do with the American Civil War? And why was a top CIA trouble-shooter needed as a middleman? And why was that middleman looking for David Audley, senior analyst for British Intelligence? It all seemed very wrong to Oliver St John Latimer, but it did present an interesting opportunity. Unfortunately for the ambitious, and usually desk-bound, Latimer, the opportunity was twice as deadly as it was intriguing.

David Roche, a young double agent, is assigned to recruit British Intelligence Chief Dr David Audley into Soviet service. It isn't long before Roche begins to doubt the information he has been given, and it isn't long before he sees how he might use than information to free himself of his obligations to both sides. Roche joins Audley and two friends at an ancient tower in the French countryside, and also meets with Lady Alexandra Champeney-Perowne - who shows him why it is so vital that he get out. And out he goes, in an exciting denouement involving the KGB, British Intelligence and - out of...

British Intelligence officer David Audley slips away to Italy without authorisation, taking his wife with him. Immediately the suspicion arises that he may have defected, and the head of Italian security is also interested in his arrival, particularly as it has flushed from cover a rogue communist. But Audley has his own reasons for leaving Britain, in an investigation that becomes a matter of life or death.

In the rural peace of modern England a war game recreates the slaughter of the Civil War. But when the battle ends, a real corpse is left it the Swine Brook; and an aristocratic but impoverished revolutionary claims to have found a cache of 'Cromwell's gold'. When David Audley is called in, 17th century secrets and the deadly game of modern espionage clash in a brilliantly intricate thriller of bluff and counter-bluff.

An innocent enough advertisement, placed by General Maxwell, retired war hero and beloved squire of Duntisbury Royal, equally innocent hamlet nestled in the English countryside. But the results are explosive. Although it seems obvious that the IRA's stars are rising, there's a more global type of conspiracy in the country air. The CIA and the KGB are suddenly sniffing around, along with British Intelligence Chief Dr David Audley - whose intuition for mischief and espionage puts him right in the midst of the action.

General Zarubin, the Soviet mastermind, confronts his number two, the infinitely wily Professor Nikolai Andrievich Panin, on a point overlooking the British Channel. Meanwhile, Henry Jaggard of British Intelligence has two pressing problems. He knows the Soviets are mounting a defensive program against a Polish dissident group in Britain, but he cannot intervene without jeopardising his best inside agents. And Dr David Audley, of the Intelligence R&D Department, has been playing clever politics again; to bring him to heel, Jaggard needs firsthand evidence.

'A New Kind of War' takes us back to the Greece and Germany of 1945 - as the old kind of war comes to its official end. Why has David Audley broken the British-Greek truce? And furthermore, why did his brigadier order his actions? Is it just coincidence that Audley is surprised near Delphi by Captain Fattorini of the Royal Engineers? As a result of that unfortunate encounter, Fattorini finds himself in occupied Germany as the newest member of TRR-2: a special intelligence unit engaged in a dangerous and brutal game. It is not until he at last meets Audley's mysterious brigadier that Fattorini...