A quandary for John Mannering (aka 'The Baron'). A young brash artist is found half-dead, with a noose around his neck, on the same day he had attempted to get Mannering to finance his career. The artist's terrified girlfriend desperately seeks help. Has the man tried to kill himself, or is it a case of attempted murder?

The Earl of Lithorn is a very skilled rider, who nevertheless one day gets thrown by his horse and breaks his neck. Meanwhile, his daughter and heiress claims to have seen a corpse in the library with its throat slit. Is she hallucinating, or is there some deeper mystery that also extends to the death of the Earl? John Mannering (aka 'The Baron') investigates and is soon embroiled in a case that involves not just murder, but espionage and very real danger to himself.

As World War II enters what may be the 'beginning of the end', Dr. Palfrey and his Z5 colleagues are tasked with locating many of the doctors, scientists and other prominent people who have been imprisoned by the Nazis all over Europe. They will be needed in the re-building of the war-torn countries and Palfrey must lead them to safety. This action packed adventure follows the team's progress as they proceed from the Baltic to the very heart of the enemy's stronghold: Berlin.

The Honourable Richard Rollison (aka 'The Toff') reluctantly agrees to attend a wedding. Is he the only one that notices something strange about the bride? Murder and blackmail follow with Rollison seeking a first wife, a discovery in the Thames, and him as a suspect. He is Paris bound when the police stop him, but that is not allowed to get in his way as he attempts to solve the mystery and reveal the murderer's identity.

Roger West of Scotland Yard, one of their finest and most down to earth detectives, get involved in the callous brutality of the underworld. Cecil Chayter is released from prison after serving twenty years, but there are those that believe he should have incarcerated for longer, whilst others are convinced of his innocence and that he was the victim of a hate campaign that preceded his trial. West has to battle with those who now want Chayter dead and at the same time fight off any notion that 'bygones should now be bygones'.

The peace of a quiet day is disturbed at Quinns, the antique shop in London's Mayfair owned by John Mannering – known also as 'The Baron' and a former master cracksman and jewel thief. The phone rings and is answered by Josh Larraby, himself a former thief. 'They're trying to kill me' pleads the man on the line. Then laughter is heard, at first soft, but rising to a crescendo which makes even the stalwart Larraby cringe. What is to be done? But there is more to the call than might be supposed, for Mannering must battle a plot to dominate and destroy him.

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 service. Now, as Department Z's agents prepare for this high-profile, high-risk assignment, Quinion will find himself right in the line of fire—and in personal danger . . .

A ruthless killer is on the loose and forces the John Mannering (aka 'The Baron'), a retired jewel thief and master cracksman, to once again step outside of the law in order to hunt down the murderer, and also save his own skin. A victim had issued a cryptic warning before dying: 'Tell M. danger from Paul K'. It is clear Mannering is in extreme danger, but why, in what form the fatal blow might be delivered, and where he can start the pursuit remains to be deduced. Events lead to a hair-raising trail in which Mannering cannot afford any mistakes.

John Mannering (aka 'The Baron') is a retired jewel thief who now runs a respectable antique business in London's Mayfair. His curiosity is aroused when he is invited to Hong Kong by a dealer to view a unique exhibition of Chinese art, but is even more astounded by the lengths someone is prepared to go to so as to prevent him attending.

Richard Rollison (aka 'The Toff) is ordinarily used to helping solve crimes and injustices perpetrated on others. Upon this occasion, however, he find himself in hiding and faced with a charge of murder he didn't commit. Whilst on holiday, he had befriended a girl who is not all she appears to be at first sight. A man who has been following her was then found murdered. All the evidence points to her, yet she was with 'The Toff' at the time and so he must be her accomplice ...

Roger 'Handsome' West of Scotland Yard is called to the West Midlands to help solve a mysterious double murder that has taken place in a large printing works. The victims were lovers and so suspicion falls upon the dead woman's husband. West ends up charging him, but then the printing works is sabotaged and there is a further murder. The local police are not impressed by West's methods, and he also realises that there is more to this case than originally thought. Just what is going on and are there more killings in the offing?

Roger ('Handsome') West of Scotland Yard investigates from Chelsea, London to Miami. Sir David Marshall, a diplomat concerned with Commonwealth relations, is seemingly involved in a jealous brawl over a woman, but West believes there is more to the matter than meets the eye. His belief is soon vindicated and he sets off on a trail to find the truth.

Commander George Gideon of Scotland Yard is seriously worried about cases of child molestation and murder. Meanwhile, London has been subject to sustained power cuts - what is behind them? Is it problems with the electrical supply, or even some form of economic difficulty, or does organised crime somehow feature and be taking advantage of the confusion and darkness caused by the pattern of 'outages'? As always, Gideon finds the solutions to his problems are not as at first expected.

A thrilling mystery set against the backdrop of the Blitz in WWII England, by an Edgar Award–winning author. England, 1941. Terror from the Germans' constant bombing is spreading through the nation, as homes, cities, and morale are reduced to little more than rubble. Worn down and defeated, British spirit teeters on a delicate seesaw. When an insidious enemy strikes from within, the government is blindsided. Vital food supplies are destroyed and mysterious leaflets threaten imminent starvation. Department Z are called in to investigate—but soon find themselves locked in mortal combat with a ruthless, anonymous adversary who treats treason and murder like child's play. How do you fight an unknown enemy? As deceit and betrayal mounts, the agents of Department Z find themselves in a race against time to uncover the conspiracy before there are deadly consequences.

The Honourable Richard Rollison, (aka 'The Toff') is once again on the cricket field, indulging in one of his favourite pastimes, when he is called away. A girl has been kidnapped and her life is in danger. He has to find a way through hidden secrets from a grim past in order to solve this series of crimes.