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.

Mia and Ben, an Australian couple in their early 30s, have relinquished one dream and embraced another, selling their Sydney flat and purchasing an old yellow house in the picturesque village of Cordes-sur-Ciel in southwest France. They soon meet sophisticated neighbours Dominic and Susannah, a British couple in their 60s who welcome them warmly but whose own relationship is in crisis. Mia and Ben are immediately starstruck and impressed by their lavish hospitality. However, things with Dominic and Susannah are not what they first seem. 

Iris Turner, an unworldly young Englishwoman, arrives in the French Riviera to take up a secretarial role for the mysterious Hammond Brooke. Living in a small, exclusive hotel among eccentric and unpredictable aristocrats and struggling to gain her employer's trust, she soon realises that nothing is as it seems. Initiated into the mysterious world of perfume, she finds herself entangled in a web of intrigue and deception.

Fiona, Sue, and Daisy, three retired ladies who volunteer at the local charity shop, Dogs Need Nice Homes, can’t believe their favorite customer is dead. Eighty-six-year-old Sarah Brown was found murdered in her hallway by her delivery man, a domino clutched in her hand—with a name scratched on it. When another person is found dead with a domino in their hand, and with the police making no progress, the ladies will need to help unmask a serial killer. At least they have Fiona’s scruffy-haired terrier cross to assist them.

DS Whitney Walker wants a promotion, but it’s hard when she’s trying to balance motherhood with a career. When a newborn baby is kidnapped from the local hospital, she draws on her skills as a mother to help. Despite being ordered not to, and when the leads are going nowhere, Walker enlists the help of a local journalist who’s convinced it’s the work of an international baby smuggling ring. Walker’s plan backfires and she fears they’re running out of time.