It all begins on a Monday, when four people board an elevator in a Manhattan office tower. Each presses a button for their floor, but the elevator proceeds, nonstop, to the top. Once there, it stops for a few seconds, and then plummets. Right to the bottom of the shaft. It appears to be a horrific, random tragedy. But then, on Tuesday, it happens again, in a different skyscraper. And when Wednesday brings yet another high-rise catastrophe, one of the most vertical cities in the world - and the nation’s capital of media, finance and entertainment - is plunged into chaos.

Cordelia Russell has been living on the Côte d'Azur for 10 years, posing as an English heiress. Now her money is gone, and her luck is running out. Desperate to escape her grotty flat and grim reality, Cordelia spends a decadent night at the Negresco. But surrounded by the young, beautiful and privileged, she feels her age and her poverty. 

It's winter in Melbourne, and Detective Emmett Corban is starting to regret his promotion to head of the Missing Persons Unit, as the routine reports pile up on his desk. So when Natale Gibson goes missing, he's convinced this is the big case he's been waiting for - the woman's husband and parents insist the devoted mother would never abandon her children, and her personal accounts remain untouched. But things aren't all they seem. The close-knit Italian family is keeping secrets - none bigger than the one Natale has been hiding.

When investigative journalist Chrissie O’Brian lands a senior job at The Argus, she is desperate to escape the nightmares of her past. Her life has become a daily battle to numb the pain. But her job is something she can do better than anyone else - and the only thing that keeps the memories at bay.

Zara Khoury believes in love – so much so that she flies from Dubai to Liverpool to be with a man she barely knows. It’s a risk, but she’s certain that uprooting her life for Nick is the new start she needs. Jim Glover is stuck. Since his Dad died, he’s put his dreams aside and stayed at home in Liverpool to care for his mum. Trapped in a dead-end job, he’s going nowhere – that is, until he gets a phone call that just might change his life....

After a shocking discovery, Grace Woods leaves her vast Australian sheep station and travels to tumultuous postwar Paris in order to find her true identity. While working as a mannequin for Christian Dior, the world's newly acclaimed emperor of fashion, Grace mixes with counts and princesses, authors and artists, diplomats and politicians. But when Grace falls for handsome Philippe Boyer, she doesn't know that he is leading a double life, nor that his past might inflict devastating consequences upon her. 

In 1936, intrepid young Australian journalist Nancy Wake is living in Paris after witnessing firsthand the terror of Hitler’s rise in Europe, firing her resolve to join the fight to defeat the Nazis. When Nancy falls in love with a handsome French industrialist, no sooner has she become Mrs. Henri Fiocca than the Germans invade and Nancy adopts another name, a codename - the first of many. 

Frank is a service station owner on a little-used highway who just wants a quiet life. His granddaughter has been sent to stay with him to fix her attitude, but they don't talk a lot. When a badly injured young woman arrives at Frank's service station with several cars in pursuit, Frank and a handful of unsuspecting customers are thrust into a life or death standoff.

Jackman’s sister-in-law Sarah disappears to London and throws herself into the river. What drove her to this? She was a woman with a seemingly happy home life and two beloved sons. DI Jackman and DI Evans dig into Sarah’s life. And Jackman realises he knew almost nothing about his sister-in-law’s past. Then, they discover a woman in a neighbouring village died in similar circumstances. What is the connection to a convicted murderer whose family are convinced he is innocent? Who is really pulling the strings?

To those who don’t really know her, Kate Henderson’s life must seem perfectly ordinary. But she is in fact a senior MI6 officer, who right now is nursing the political equivalent of a nuclear bomb. Kate’s most recent mission has yielded the startling intelligence that the British Prime Minister has cancer - and that one of the leading candidates to replace him may be a Russian agent of influence. Up against the clock to uncover the Russian mole, Kate risks everything to get to the truth.

It’s Livia’s 40th birthday, and she’s having the party of a lifetime to make up for the wedding she never had. Everyone she loves will be there except her daughter Marnie, who’s studying abroad. But although Livia loves Marnie, she’s secretly glad she won’t be at the party. She needs to tell Adam something about their daughter, but she’s waiting until the party is over so they can have this last happy time together. 

Amy has only ever known life in the Clearing. She knows what's expected of her. She knows what to do to please her elders, and how to make sure the community remains happy and calm. That is, until a new young girl joins the group. She isn't fitting in; she doesn't want to stay. What happens next will turn life as Amy knows it on its head. Freya has gone to great lengths to feel like a 'normal person'. In fact, if you saw her go about her day with her young son, you'd think she was an everyday mum. 

December 1974. Abby Campbell and her brother Charlie are driving to their father's farm on a dark country road when they swerve into the path of another car, forcing it into a tree. The pregnant driver is killed instantly. In the heat of the moment, Abby and Charlie make a fateful decision. They flee, hoping heavy rain will erase the fact they were there. They both have too much to lose.

It's 1996. Detective Sergeant Tom Thorne is a haunted man. Haunted by the moment he ignored his instinct about a suspect, by the horrific crime that followed and by the memories that come day and night, in sunshine and shadow. So when seven-year-old Kieron Coyne goes missing while playing in the woods with his best friend, Thorne vows he will not make the same mistake again. Cannot. The solitary witness. The strange neighbour. The friendly teacher. All are in Thorne's sights. This case will be the making of him...or the breaking. 

1898, Geelong, Victoria. Stella Truehart is all alone in the world. Her good-for-nothing husband has died violently at the hands of an unknown assailant. Her mother is dead, her father deserted them before she was born, and now her kindly Truehart grandparents are also in their graves. Private detective Bendigo Barrett has been tasked with finding Stella. He believes his client's intentions are good, but it is evident that someone with darker motives is also seeking her.