London, 1882. Alec Lonsdale, a young reporter on the Pall Mall Gazette, is working on a story about a fatal house fire. But the postmortem on the victim produces shocking results: Patrick Donovan's death was no accident. But why would someone murder a humble shop assistant and steal part of his brain? When a second body is discovered, its throat cut, and then a third, Lonsdale and his spirited female colleague, Hulda Friederichs, begin to uncover evidence of a conspiracy that reaches to the highest echelons of Victorian society.

Hugh of Singleton, fourth son of a minor knight, has been educated as a clerk, usually a prelude to taking holy orders. However, feeling no certain calling despite a lively faith, he turns to the profession of surgeon, training in Paris and then hanging out his sign in Oxford. A local lord asks him to track the killer of a young woman whose bones have been found in the castle cesspit. She is identified as the impetuous missing daughter of a local blacksmith, and her young man, whom she had provoked very publicly, is in due course arrested and sentenced at the Oxford assizes.

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.  

The year is 1895. The police don't have the resources to deal with everything that goes on in the capital. The rich turn to a celebrated private detective when they need help: Sherlock Holmes. But in densely populated South London, where crimes are sleazier and Holmes rarely visits, people turn to Arrowood, a private investigator who despises Holmes, his wealthy clientele and his showy forensic approach to crime. Arrowood understands people, not clues.

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.

When Dr Raymond Ferens moves to a practice at Milham in the Moor in north Devon, he and his wife are enchanted with the beautiful hilltop village lying so close to moor and sky. At first they see only its charm, but soon they begin to uncover its secrets - envy, hatred and malice. Everyone says that Sister Monica, warden of a children's home, is a saint - but is she? A few months after the Ferens' arrival her body is found drowned in the mill-race. Chief Inspector Macdonald faces one of his most difficult cases in a village determined not to betray its dark secrets to a stranger.

Mrs Laetitia Rodd is the impoverished widow of an Archdeacon: she is also a private detective of the utmost discretion. In winter 1850, she is asked by Sir James Calderstone to investigate the background of an 'unsuitable' woman his son intends to marry. In the guise of governess, she travels to the family seat, Wishtide, where she discovers that the Calderstones have more to hide than most. As their secrets unfold, the case takes an unpleasant turn when a man is found dead outside a tavern.

London, 1895. Daniel Wilson and Abigail Fenton have been hired by the Natural History Museum to find out who deliberately smashed the fossilised skeleton of a small dinosaur. At first Daniel is reluctant to take the case, pointing out that they deal in murders, not vandalism. But then one of the attendants in the dinosaur room is murdered, his body found tied to a dinosaur skeleton and a note pinned to him saying 'The price of betrayal'. As Daniel and Abigail investigate, they must negotiate a web of legal and professional tensions.

October, 1604. Former ship's surgeon turned country physician Gabriel Taverner is surprised to receive an urgent summons from his old naval captain. Now docked in Plymouth harbour, having recently returned from the Caribbean, Captain Colt believes his ship is haunted by an evil spirit and has asked Gabriel to investigate. Dismissive of the crew's wild talk of mysterious blue-skinned ghosts, Gabriel is convinced there must be a rational explanation behind the mass hallucinations.

Ian Rutledge returns to his career at Scotland Yard after years fighting in the First World War. Unknown to his colleagues he is still suffering from shell shock, and is burdened with the guilt of having had executed a young soldier on the battlefield for refusing to fight. A jealous colleague has learned of his secret and has managed to have Rutledge assigned to a difficult case which could spell disaster for Rutledge whatever the outcome. A retired officer has been murdered, and Rutledge goes to investigate.

Berlin, July 1944, a world of illicit jazz clubs, sexually generous young women, suspect art dealers, last-ditch zealots and a city defined by crumbling infrastructure, advanced terror, dirty secrets and deep politics - and then there is August Schlegel, caught askance in a web of totalitarian mayhem.

When the decapitated body of a monk is found outside Vienna's most splendid baroque church, a young psychoanalyst, Dr Liebermann, must enter a world of secret lore and mysticism if he is to find the key to the mystery....

Newly appointed as land agent to the youthful Lord Croft, Matthew Rowsley finds plenty to keep him busy as he attends to his lordship's neglected country estate. But he's distracted from his tasks by the disappearance of a young housemaid. Has Maggie really eloped with a young man, as her mother attests - or is the truth rather more sinister? What's been going on behind the scenes at the grand country estate and where has his lordship disappeared to?

A London policeman and his highly-educated wife investigate a series of murders involving members of Parliament.

After an elite criminal profiling unit is shut down amid a storm of scandal and mismanagement, only one person emerges unscathed. Forensic psychiatrist Doctor Alexander Gregory has a reputation for being able to step inside the darkest minds to uncover whatever secrets lie hidden there, and soon enough he finds himself drawn into the murky world of murder investigation. In the beautiful hills of County Mayo, Ireland, a killer is on the loose. Panic has a stranglehold on its rural community, and the Garda are running out of time.