Two years ago, a hostile Prime Minister launched the Monochrome inquiry, investigating "historical over-reaching" by the British Secret Service “to investigate historical over-reaching.” Monochrome’s mission was to ferret out any hint of misconduct by any MI5 officer—and allowed Griselda Fleet and Malcolm Kyle, the two civil servants seconded to the project, unfettered access to any and all confidential information in the Service archives in order to do so. But MI5’s formidable First Desk did not become Britain’s top spy by accident, and she has successfully thwarted the inquiry at every turn.

Mma "Precious" Ramotswe sets up a detective agency in Botswana on the edge of the Kalahari Desert, making her the only female detective in the country. At first, cases are hard to come by. But eventually, troubled people come to Precious with a variety of concerns. Potentially philandering husbands, seemingly schizophrenic doctors, and a missing boy who may have been killed by witch doctors all compel Precious to roam about in her tiny van, searching for clues.

Berlin, 1929. Detective Inspector Rath was a successful career officer in the Cologne Homicide Division before a shooting incident in which he inadvertently killed a man. He has been transferred to the vice squad in Berlin, a job he detests even though he finds a new friend in his boss, Chief Inspector Wolter. There is seething unrest in the city, and the Commissioner of Police has ordered the vice squad to ruthlessly enforce the ban on May Day demonstrations.

In the aftermath of the Great War and a devastating family tragedy, Laurence Bartram has turned his back on the world. But with a well-timed letter, an old flame manages to draw him back in. Mary Emmett's brother John - like Laurence, an officer during the war - has apparently killed himself while in the care of a remote veterans' hospital, and Mary needs to know why. What connects a group of war poets, a feud within Emmett's regiment, and a hidden love affair? Was Emmett's death really a suicide or the missing piece in a series of murders?

Nineteen thirty-four, London. Into the decaying cul-de-sac of Bleeding Heart Square steps aristocratic Lydia Langstone fleeing an abusive marriage. However, unknown to Lydia, a dark mystery haunts Bleeding Heart Square. What happened to Miss Penhow, the middle-aged spinster who owns the house and who vanished four years earlier? Why is a seedy plain-clothes policeman obsessively watching the square? What is making struggling journalist Rory Wentwood so desperate to contact Miss Penhow?

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.

No one lives forever. But the truth survives us all. Kate Murray is deeply troubled. In front of her lies a dead man, a stranger who only minutes before had approached her wanting to tell her about a mystery, a long-forgotten murder. The crime was old, he'd told her, but still deserving of justice. Soon Kate is caught up in a dangerous whirlwind of events that takes her back into her grandmother's mysterious war-time past and across the Atlantic as she tries to retrace the dead man's footsteps.

Winter in Madrid is set just after the bloody Spanish Civil War, with World War II looming over Europe. Reluctantly, Harry Brett looks for an old schoolmate who's become a person of interest for British intelligence.

1952. Twelve years have passed since Churchill lost to the appeasers and Britain surrendered to Nazi Germany. The global economy strains against the weight of the long German war against Russia still raging in the east. The British people find themselves under increasingly authoritarian rule - the press, radio, and television tightly controlled, the British Jews facing ever greater constraints.

Captain Sam Wyndham, former Scotland Yard detective, is a new arrival to Calcutta. Desperately seeking a fresh start after his experiences during the Great War, Wyndham has been recruited to head up a new post in the police force. He is immediately overwhelmed by the heady vibrancy of the tropical city, but with barely a moment to acclimatize or to deal with the ghosts that still haunt him, Wyndham is caught up in a murder investigation that threatens to destabilize a city already teetering on the brink of political insurgency.

Following the disastrous retreat of the British army from Dunkirk in 1940, England is plunged into a state of fear. The threat of a German invasion is real, and many German Nationals are interned in camps across the country. One such camp is on the ancient moor land of Prees Heath, near the small town of Whitchurch in Shropshire, where Tom Tyler is the sole detective inspector. Young women from all walks of life have joined the Land Army, to help desperate farmers keep the country fed. Then one turns up dead.

Barely out of school and doing her bit for the British war effort, Marian Sutro has one quality that makes her stand out—she is a native French speaker. It is this that attracts the attention of the SOE, the Special Operations Executive, which trains agents to operate in occupied Europe. Drawn into this strange, secret world at the age of nineteen, she finds herself undergoing commando training, attending a “school for spies,” and ultimately, one autumn night, parachuting into France from an Royal Air Force bomber to join the Wordsmith resistance network.

Red Square, 1985. The naked body of a young man is left outside the walls of the Kremlin, frozen solid - like marble to the touch - missing the little finger from his right hand. A week later, Alex Marston, the headstrong 15-year-old daughter of the British ambassador, disappears. Army Intelligence Officer Tom Fox, posted to Moscow to keep him from telling the truth to a government committee, is asked to help find her. It's a shot at redemption.

Propelled into the priesthood by a family tragedy, Odran Yates is full of hope and ambition. When he arrives at Clonliffe Seminary in the 1970s, it is a time in Ireland when priests are highly respected, and Odran believes that he is pledging his life to "the good."

July 8, 1921. Ireland. A British Officer is shot dead on a remote hillside south of Dublin. November 22, 2015. United Kingdom. Former police detective Jayne Sinclair, now working as a genealogical investigator, receives a phone call from an adopted American billionaire asking her to discover the identity of his real father. How are the two events linked? Jayne Sinclair has only three clues to help her: a photocopied birth certificate, a stolen book, and an old photograph.