Aggie Morton lives in a small town on the coast of England in 1902. Adventurous and imaginative but deeply shy, Aggie hasn't got much to do since the death of her beloved father...until the fateful day when she crosses paths with 12-year-old Belgian immigrant Hector Perot and discovers a dead body on the floor of the Mermaid Dance Room! As the number of suspects grows and the murder threatens to tear the town apart, Aggie and her new friend will need every tool at their disposal - including their insatiable curiosity, deductive skills, and not a little help from their friends.

Twelve-year-old Myrtle Hardcastle has a passion for justice and a highly unconventional obsession with criminal science. Armed with her father’s law books and her mum’s microscope, Myrtle studies toxicology and keeps abreast of the latest developments in crime scene analysis. When her next-door neighbor, a wealthy spinster and eccentric breeder of rare flowers, dies under mysterious circumstances, Myrtle seizes her chance. With her unflappable governess, Miss Ada Judson, by her side, Myrtle takes it upon herself to prove Miss Wodehouse was murdered.

Dear Diary...Bess, George, and I are actually in Alaska! Everywhere you look, there are massive mountains and sparkling, deep-blue waters. We're on the maiden voyage of the Arctic Star luxury cruise ship, and my old friend, Becca Wright, the assistant cruise director, needs our help. She received threatening emails before even setting sail; then a bloody body turned up in the swimming pool.

It's wintertime at Greenglass House. The creaky smuggler's inn is always quiet during this season, and 12-year-old Milo, the innkeepers' adopted son, plans to spend his holidays relaxing. But on the first icy night of vacation, out of nowhere, the guest bell rings. Then rings again. And again. Soon Milo's home is bursting with odd, secretive guests, each one bearing a strange story that is somehow connected to the rambling old house.

"Are you a gifted child looking for special opportunities?" Dozens of children respond to this peculiar ad in the newspaper and are then put through a series of mind-bending tests, which readers take along with them. Only four children—two boys and two girls—succeed. Their challenge: to go on a secret mission that only the most intelligent and inventive children could complete. To accomplish it they will have to go undercover at the Learning Institute for the Very Enlightened, where the only rule is that there are no rules.

The daughter of a baronet and minor heiress, Rosalind Thorne was nearly ruined after her father abandoned the family. To survive in the only world she knew, she began to manage the affairs of some of London society's most influential women, who rely on her wit and discretion. So when artistocratic wastrel Jasper Aimesworth is found dead in London's most exclusive ballroom, Almack's, Rosalind must use her skills and connections to uncover the killer.

Fourteen-year-old Mona isn't like the wizards charged with defending the city. She can't control lightning or speak to water. Her familiar is a sourdough starter, and her magic only works on bread. She has a comfortable life in her aunt's bakery making gingerbread men dance. But Mona's life is turned upside down when she finds a dead body on the bakery floor. An assassin is stalking the streets of Mona's city, preying on magic folk, and it appears that Mona is his next target. And in an embattled city suddenly bereft of wizards, the assassin may be the least of Mona's worries.

The year is 1920: Flying in the face of convention, legendary American adventuress Beryl Helliwell never fails to surprise and shock. The last thing her adoring public would expect is that she craves some peace and quiet. The humdrum hamlet of Walmsley Parva in the English countryside seems just the ticket. And, honestly, until America comes to its senses and repeals Prohibition, Beryl has no intention of returning stateside and subjecting herself to bathtub gin.

The village of Badger's Drift is the essence of tranquillity. But when resident and well-loved spinster Miss Simpson takes a stroll in the nearby woods, she stumbles across something she was never meant to see, and there's only one way to keep her quiet. Miss Simpson's death is not suspicious, say the villagers. But Miss Lucy Bellringer refuses to rest: her friend has been murdered. She is sure of it.

Lady Emily Hardcastle is an eccentric widow with a secret past. Florence Armstrong, her maid and confidante, is an expert in martial arts. The year is 1908 and they've just moved from London to the country, hoping for a quiet life. But it is not long before Lady Hardcastle is forced out of her self-imposed retirement. There's a dead body in the woods, and the police are on the wrong scent. Lady Hardcastle makes some enquiries of her own, and it seems she knows a surprising amount about crime investigation...

Willa Noble knew it was bad luck when it was pouring rain on the day of her ever-important job interview at the Dickinson home in Amherst, Massachusetts. When she arrived late, disheveled with her skirts sodden and filthy, she'd lost all hope of being hired for the position. As the housekeeper politely told her they'd be in touch, Willa started toward the door of the stately home only to be called back by the soft but strong voice of Emily Dickinson. What begins as tenuous employment turns to friendship as the reclusive poet takes Willa under her wing.

Cecilia Bassingwaite is the ideal Victorian lady. She's also a thief. Like the other members of the Wisteria Society crime sorority, she flies around England drinking tea, blackmailing friends, and acquiring treasure by interesting means. Sure, she has a dark and traumatic past and an overbearing aunt, but all things considered, it's a pleasant existence. Until the men show up.

On the day they are born, every Swift child is brought before the sacred Family Dictionary. They are given a name, and a definition. A definition it is assumed they will grow up to match. Meet Shenanigan Swift: Little sister. Risk-taker. Mischief-maker. Shenanigan is getting ready for the big Swift Family Reunion and plotting her next great scheme: hunting for Grand-Uncle Vile’s long-lost treasure. She’s excited to finally meet her arriving relatives—until one of them gives Arch-Aunt Schadenfreude a deadly shove down the stairs.

It is 1940 and William, 12, Edmund, 11, and Anna, nine, aren't terribly upset by the death of the not-so-grandmotherly grandmother who has taken care of them since their parents died. But the children do need a guardian, and in the dark days of World War II London, those are in short supply, especially if they hope to stay together. Could the mass wartime evacuation of children from London to the countryside be the answer?

Seraphina Winyard is something feared by many…a woman mage. When she comes of age, Sera is determined to seize control of her life, but she faces opposition from an unknown opponent.