As India celebrates the arrival of a momentous new decade, Inspector Persis Wadia stands vigil in the basement of Malabar House, home to the city's most unwanted unit of police officers. Six months after joining the force she remains India's first female police detective, mistrusted, sidelined and now consigned to the midnight shift. And so, when the phone rings to report the murder of prominent English diplomat Sir James Herriot, the country's most sensational case falls into her lap.

Singapore, 1910 - Desperate for a fresh start, Harriet Gordon finds herself living with her brother, a reverend and headmaster of a school for boys, in Singapore at the height of colonial rule. Hoping to gain some financial independence, she advertises her services as a personal secretary. It is unfortunate that she should discover her first client, Sir Oswald Newbold - explorer, mine magnate, and president of the exclusive Explorers and Geographers Club - dead with a knife in his throat.

Detective Sergeant Chris Waters got the call at 05.29 that July morning. This is it, said DCI Reeve, you'll be first there, it's all yours, you're the crime scene manager. Suddenly, after months of waiting and wondering, Waters finds himself in at the deep end, and alone at the scene of a puzzling murder. As the investigation proceeds, the detectives at Kings Lake Central find themselves visiting familiar places and talking to some familiar faces, while old enmities reappear in the incident room. Before this is over, Chris Waters will need to make a career-changing decision.

D.I. Duncan McAdam is dispatched home to the Misty Isle. A body has been found buried in a remote location on the Waternish peninsula. Well-preserved in the peat, Isla Matheson—missing for the better part of two decades—is revealed to a shocked island community. A teenage runaway is dead...and no one is talking.

In 1892, Bombay is the center of British India. Nearby, Captain Jim Agnihotri lays in Poona military hospital recovering from a skirmish on the wild Northern frontier, with little to read but newspapers. The case that catches Jim's attention is being called the crime of the century: Two women fell from the busy university’s clock tower in broad daylight. Moved by the widower of one of the victims - his certainty that his wife and sister did not commit suicide - Jim approaches the Framjis and is hired by the Parsee family to investigate what happened that terrible afternoon.

Northern Ireland, spring 1981. Hunger strikes, riots, power cuts, a homophobic serial killer with a penchant for opera, and a young woman’s suicide that may yet turn out to be murder: on the surface, the events are unconnected, but then things—and people—aren’t always what they seem. Detective Sergeant Duffy is the man tasked with trying to get to the bottom of it all. It’s no easy job—especially when it turns out that one of the victims was involved in the IRA but was last seen discussing business with someone from the loyalist Ulster Volunteer Force.

Recently divorced and reluctantly retired, Julia Bird has fled London to enjoy idyllic rural life in the Cotswolds. Determined to have the perfect English garden, her first job is to tear down the old shed, where she unearths much more than she’d bargained for: a body, apparently buried for decades. But who could it be, and who killed them? The police draw a blank, and even the gossip-fest that is the local book club can’t remember anyone going missing in the village.

Sydney, 1965: After a chance encounter with a stranger, mild-mannered tea lady Hazel Bates becomes an accidental sleuth, stumbling into a world of ruthless crooks and racketeers in search of a young woman she believes to be in danger. In the meantime, Hazel's job at Empire Fashionwear is in jeopardy. The firm has turned out the same frocks and blouses for the past twenty years and when the mini-skirt bursts onto the scene, it rocks the rag trade to its foundations. War breaks out between departments and it falls to Hazel, the quiet diplomat, to broker peace and save the firm.

In the sleepy village of Cookingdean, Dr Nell Ward is busy working in the grounds of a local manor house. Whilst inspecting an old tunnel, she did not expect to overhear a murder. As the only person with any clues as to what happened, Nell soon finds herself in the middle of the investigation. Desperate to clear her name Nell, along with her colleague Adam, set out solving the murder using their skills as ecologists to uncover details no one else would notice. But it soon becomes clear that playing Agatha Christie is much harder than it might, at first appear.

A weekly newspaper dedicated to the weird and the wonderful (but mostly the weird), The Stranger Times is the go-to publication for the unexplained and inexplicable. At least that's their pitch. The reality is rather less auspicious. Their editor is a drunken, foul-tempered and foul-mouthed husk of a man who thinks little of the publication he edits. His staff are a ragtag group of misfits. And as for the assistant editor...well, that job is a revolving door - and it has just revolved to reveal Hannah Willis, who's got problems of her own.