1894. A well-respected academic is found dead in a gentlemen’s convenience cubicle at the British Museum, the stall locked from the inside. Professor Lance Pickering had been due to give a talk promoting the museum’s new 'Age of King Arthur' exhibition when he was stabbed repeatedly in the chest. Having forged a strong reputation working alongside the inimitable Inspector Abberline on the Jack the Ripper case, Daniel Wilson is called in to solve the mystery, and he brings his expertise and archaeologist Abigail Fenton with him.

After rising to prominence for his role investigating the case of Jack the Ripper, former Detective Inspector Daniel Wilson is now retired. Known for his intelligence, investigative skills, and most of all his discretion, he's often consulted when a case must be solved quickly and quietly. So when a body is found in the Egyptian collection of the Fitzwilliam Museum in Cambridge, Wilson is called in.  

When a signalman discovers a mutilated body inside a railway tunnel near Groote Park, it seems to be a straightforward case of a man struck by a passing train. But Inspector Vandam of the Middeldorp police isn’t satisfied that Albert Smith’s death was accidental, and he sets out to prove foul play in a baffling mystery which crosses continents from deepest South Africa to the wilds of northern Scotland, where an almost identical crime appears to have been perpetrated.

The unloading of a consignment of French wine from the steamship Bullfinch is interrupted by a gruesome discovery in a broken cask leaking sawdust and gold sovereigns. But when the shipping clerk returns with the police, the cask and its macabre contents have gone. Following the clues to Paris, Inspector Burnley of Scotland Yard enlists the help of the genial French detective M. Lefarge to check motives and alibis in their hunt for evidence of a particularly fiendish murder.  

This novel has all the makings of a classic murder mystery, but with a twist: as Attorney-General Anstruther Blayton leads the court through prosecution and defence, Inspector Fenby carries out his investigation. All this occurs while the identity of figure in the dock is kept tantalisingly out of reach. Excellent Intentions is a classic crime novel laced with irreverent wit, first published in 1939.

Mrs Bradley, sharp-eyed detective and celebrated psychiatrist, has decided to spend Christmas with her nephew at his beautiful house in the Cotswolds. It isn’t long before a mystery unfolds. There are strange events occurring in the nearby wood, and local villagers are receiving anonymous threatening letters. Then the snow begins to fall - and a body is discovered. Mrs Bradley is on the case, but she’ll have to hatch an ingenious plan to reveal the truth and find the culprit....

Through the double clamour of Big Ben and the shrill sound of the bell rang a revolver shot. A financier is found shot in the House of Commons. Suspecting foul play, Robert West, a parliamentary private secretary, takes on the role of amateur sleuth. Used to turning a blind eye to covert dealings, West must now uncover the shocking secret behind the man's demise, amid distractions from the press and the dead man's enigmatic daughter. 

Samuel Whitehead, landlord of the Rose and Crown, is a stranger in the lonely East Anglian village of High Eldersham. And when the newcomer is stabbed to death in his pub, it seems that the veil dividing High Eldersham from the outside world is about to be lifted. Detective Inspector Young forms a theory about the case so utterly impossible that merely entertaining the suspicion makes him doubt his own sanity. Surrounded by sinister forces beyond his understanding, he calls on a brilliant amateur and 'living encyclopedia', Desmond Merrion. 

London, 1945. The capital is shrouded in the darkness of the blackout, and mystery abounds in the parks after dusk. During a stroll through Regent's Park, Bruce Mallaig witnesses two men acting suspiciously around a footbridge. In a matter of moments, one of them has been murdered; Mallaig's view of the assailant but a brief glimpse of a ghastly face in the glow of a struck match. The murderer's noiseless approach and escape seems to defy all logic, and even the victim's identity is quickly thrown into uncertainty. 

It's 1920, and Christmas is coming. Major Lennox finds a body on his doorstep - why on his doorstep? Was it to do with the Countess? Was it about the ruby necklace? Lennox goes to Melrose Court, home to his uncle, Lord Melrose, to uncover the mystery. But then, the murders begin, and it snows, and it all becomes very complicated.

London, 1812. At a fashionable address in leafy Mayfair, a far cry from Detective Stephen Lavender’s usual haunts, a man is found dead in his room. He has been brutally stabbed, but the door is locked from the inside, and the weapon is missing. The deceased is David MacAdam, an Essex businessman with expensive tastes. As Lavender and Constable Ned Woods travel between London and Chelmsford seeking to understand MacAdam’s final hours and unearth the grisly truth, they uncover a tangled web of deceit behind his stylish facade.

Who killed Sir Crispin Gibbons? A wedding invitation and news of mischief that could be murder takes Lennox to the Earl of Bloxford's country estate. He, soon, finds himself in a world of purloined artworks, forgeries, and a priceless Bloxford beauty. But who are the Bloxford beauties? And why are they the focal point around which death swirls?

Following a mysterious explosion, the offices of Excelsior Joinery Company are no more; the three directors are killed and the peace of a quiet town in Surrey lies in ruins. When the supposed cause of an ignited gas leak is dismissed and the presence of dynamite revealed, Superintendent Littlejohn of Scotland Yard is summoned to the scene. But beneath the sleepy veneer of Evingden lies a hotbed of deep-seated grievances. Confounding Littlejohn's investigation is an impressive cast of suspicious persons, each concealing their own ax to grind.

The murderer of Dr Grimauld walked through a locked door, shot his victim and vanished. He killed his second victim in the middle of an empty street, with watchers at each end, yet nobody saw him, and he left no footprints in the snow. And so it is up to the irrepressible, larger-than-life Dr Gideon Fell to solve this most famous and taxing of locked-room mysteries.

In a gloomy flat off Islington High Street, Chief Inspector Brett Nightingale and Sergeant Beddoes find an old woman dead. The Princess Olga Karukhin, who fled from Russia at the time of the Revolution, has lived in terror of being discovered ever since. Olga's grandson, Ivan, appears to have run from the scene but is later seen returning to the flat as though oblivious to the terrible crime. Taking place between 22nd and 24th December, Nightingale's enquiry takes him across London, culminating in the wrapping up of the mystery on Christmas Eve.