Arson, accident or murder? After a fire rips through a North London tower block, two bodies are found locked in an 11th floor flat. But is the third victim that ensures the presence of detective Maeve Kerrigan and the murder squad. It appears that controversial MP Geoff Armstrong, trapped by the fire, chose to jump to his death rather than wait for rescue. But what was such a right-wing politician doing in the deprived, culturally diverse Maudling Estate?

Ingrid will never forget what John did. The people he hurt. The way he lied about it so easily. The way she defended him. Now he’s back. He says a murderer is after her. He says only he can protect her. Would you trust him? The clock is ticking for Ingrid to decide. Because the killer is ready to strike again.

Detective Inspector Matthew Venn is standing by his kitchen window when he first spots them. Two young girls, facing away from him, seemingly staring towards something in the distance. They are holding hands, and they are alone. Though not a natural with children, Matthew knows he must find out why the girls are here, on a school day, unsupervised. And so he meets Olivia and Imogen, a pair of sisters whose secrets Matthew must uncover if he hopes to get them home.

After a scandal forces DI Kelly Porter out of the Met, she returns home to the Lake District. Crimes in the Cumbrian constabulary tend to be minor, but Kelly begins work on a cold case that shocked the local community - the abduction and brutal murder of a 10-year-old girl. 

When the danger is already inside, nowhere is safe… Highton prison sits nestled within the moors of western Cumbria, close to the coastal road. When two former inmates turn up dead, DI Kelly Porter is tasked with finding out why. It soon becomes obvious that she is hunting for one killer and the place where both victims were incarcerated holds the key. As Kelly delves into life at Highton she finds more questions than answers. A web of corruption and deceit emerges within the prison walls.

Detective Megan Thomas hoped that moving to Devon would mean a quiet life. Her years undercover in London left her broken and alone, unsure if she would ever recover. Slowly, she’s learning to work with a team and trust other people. But when her sister, Debbie, finds the body of local businessman Greg Porter, that peace is shattered. Porter’s wife and children don’t seem entirely grief-stricken, and his business dealings are not all they appear to be. So why are the police so determined to focus on Debbie? 

As a drug-fuelled teenage tearaway, Kaz Phelps took the rap for her little brother, Joey, over a bungled armed robbery, and went to jail. Six years later she's released on licence. Clean and sober – and driven by a secret passion for her lawyer, Helen – Kaz wants to escape the violence and abuse of her Essex gangster family.Joey is a charming, calculating and cold psychopath. He worships the ground his sister walks on and he's desperate to get her back in the family firm.

When a woman's body is discovered in a cathedral and hours later a young man is found hanging from a tree outside his home, Detective Lottie Parker is called in to lead the investigation. Both bodies have the same distinctive tattoo clumsily inscribed on their legs. It's clear the pair are connected, but how? The trail leads Lottie to St Angela's, a former children's home, with a dark connection to her own family history. Suddenly the case just got personal.

Five figures gather 'round a shallow grave. They had all taken turns to dig. An adult-sized hole would have taken longer. An innocent life had been taken, but the pact had been made. Their secrets would be buried, bound in blood. Years later a headmistress is found brutally strangled, the first in a spate of gruesome murders that shock the Black Country.

Stephen Berry is about to jump off a bridge until a suicide prevention counsellor stops him. A week later, Stephen is dead. Found at the bottom of a cliff, DI Luc Callanach and DCI Ava Turner are drafted in to investigate whether he jumped or whether he was pushed.... As they dig deeper, more would-be suicides roll in: a woman found dead in a bath; a man violently electrocuted. But these are carefully curated deaths – nothing like the impulsive suicide attempts they’ve been made out to be.

A family is gunned down in the snow, but one of the children survives. Three years on, that child takes revenge, and the Snow Killer is born. But then, nothing - no further crimes are committed, and the case goes cold. 50 years later, has the urge to kill been reawakened? As murder follows murder, the detective team tasked with solving the crimes struggle with the lack of leads. It’s a race against time and the weather - each time it snows, another person dies.

When a local journalist is found dead in an isolated spot on Roydon Common, lying beneath a hangman's noose on the anniversary of a teenager's suicide, DI Tom Janssen is asked to take on the investigation as a favor to local colleagues and must unpick the deceased man's life to discover how he came to be there. The dead man was working on something, a story he was keeping close to his chest, and even those closest to him, loved ones and colleagues, were kept in the dark. But what did he know that was so damaging as to be worth killing for? 

Former soldier. Ex-copper. Current man on the edge. Shunned by his old colleagues, and dividing his time between a dead-end job and the bottom of a whisky bottle, former Police Scotland detective superintendent Bob Hoon’s life is a mess. Then an old face from Hoon’s Special Forces days turns up asking for help: His teenage daughter has been missing for months, the police have drawn a blank, and he needs the kind of help that only Hoon can provide. And besides, Hoon owes him one.

The investigation into a warehouse fire turns into a murder inquiry when a woman’s body is found in the debris. Forensics quickly establish foul play is involved. Now fully in charge of her team, DI Tanya Miller investigates, but her efforts are thwarted by a family problem that demands immediate attention. Her niece has gone missing, and her distraught sister is adamant Tanya help find her. Juggling the two is difficult. Left to their own devices, her team are making little progress on understanding the cause of the warehouse fire.

Meet Zoe Finch, West Midlands Police's newest Detective Inspector. She's outspoken, ambitious, and damaged. And she's working a case that could make her career, or cost her everything...Fresh from the success of the Canary investigation into depravity and corruption at the highest levels, she's attracted attention. Not least from Assistant Chief Constable Bryn Jackson. But when Jackson is brutally murdered on the night of his retirement party, Zoe is dragged into a case that's deeply personal.