Sara Martinez is a hacker. She recently broke into the New York City foster care system to expose her foster parents as cheats and lawbreakers. However, instead of being hailed as a hero, Sara finds herself facing years in a juvenile detention facility and banned from using computers for the same stretch of time. Enter Mother, a British spy who not only gets Sara released from jail but also offers her a chance to make a home for herself within a secret MI5 agency. Operating out of a base in Scotland, the City Spies are five kids from various parts of the world.

Ben Ripley may only be in middle school, but he's already pegged his dream job: CIA or bust. Unfortunately for him, his personality doesn't exactly scream "secret agent". In fact Ben is so awkward, he can barely get to school and back without a mishap. Because of his innate nerdiness, Ben is not surprised when he is recruited for a magnet school with a focus on science - but he's entirely shocked to discover that the school is actually a front for a junior CIA academy.

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.

For as long as Ryanna Stuart can remember, her summers have been spent with her father and his new wife. Just the three of them, structured, planned, and quiet. But this summer is different. This summer, she’s received a letter from her grandparents—grandparents neither she nor her dad have spoken to since her mom’s death—inviting her to stay with them at an old summer camp in the Poconos.

Sam and Asha. Asha and Sam. Their friendship is so long established, they take it for granted. Just as Asha takes for granted that Donnybrooke, the mansion that sits on the highest hill in Coreville, is the best house in town. But when Sam is accepted into snobbish Castleton Academy as an autistic “Miracle Boy,” he leaves Asha, who is also autistic, to navigate middle school alone. He also leaves her wondering if she can take anything for granted anymore.

In the dead of night, a truck arrives in Slaughterville, a small town curiously named after its windowless slaughterhouse. Seven mysterious kids with suitcases step out of the vehicle and into an abandoned home on a dead-end street, looking over their shoulders to make sure they aren't noticed. But Ravani Foster covertly witnesses their arrival from his bedroom window. Timid and lonely, Ravani is eager to learn everything he can about his new neighbors: What secrets are they hiding? And most mysterious of all...where are the adults?

When ten-year-old Lina Gao steps off the plane in Los Angeles, it’s her first time in America and the first time seeing her parents and her little sister in five years! She’s been waiting for this moment every day while she lived with her grandmother in Beijing, getting teased by kids at school who called her “left behind girl.” Finally, her parents are ready for her to join their fabulous life in America! Except, it’s not exactly like in the postcards.

When Mac first opens his classroom copy of Jane Yolen's The Devil's Arithmetic and finds some words blacked out, he thinks it must be a mistake. But then when he and his friends discover what the missing words are, he's outraged. Someone in his school is trying to prevent kids from reading the full story. But who? Even though his unreliable dad tells him to not get so emotional about a book (or anything else), Mac has been raised by his mom and grandad to call out things that are wrong.

The son of a struggling single mother, Jamie Conklin just wants an ordinary childhood. But Jamie is no ordinary child. Born with an unnatural ability his mom urges him to keep secret, Jamie can see what no one else can see and learn what no one else can learn. But the cost of using this ability is higher than Jamie can imagine—as he discovers when an NYPD detective draws him into the pursuit of a killer who has threatened to strike from beyond the grave.

After 27 years of marriage and three children, Anna Oh - wife, mother, outsider artist - has fallen in love with Viveca, the wealthy Manhattan art dealer who orchestrated her success. They plan to wed in the Oh family’s hometown of Three Rivers in Connecticut. But the wedding provokes some very mixed reactions and opens a Pandora’s Box of toxic secrets - dark and painful truths that have festered below the surface of the Ohs' lives.

Twelve years ago Jessica Williams escaped a cult. Thanks to the private detective who rescued her, she reintegrated into society, endured an uncomfortable notoriety, and tried to put it all behind her. Then, at an airport bar, Jessica meets a woman with an identical name and birth date. It appears to be just an odd coincidence - until a week later, when Jessica finds her bank account drained and her personal information stolen. Following a trail of the grifter’s victims, each with the same name, Jessica gathers players - one by one - for her own game.

At just 35, reclusive billionaire Robbie Malcolm is a renowned financial prognosticator, a celebrated philanthropist, and a mathematical genius. Also, he’s dying, which is a fact he’s carefully concealing from the world. As he takes stock, Robbie realizes that his wealth means nothing if he can’t help the people who matter most. So he invites his oldest friends - Blair, Cat, and Wade - to their beloved Fenwick Island on the coast of Delaware to share his secret and to reveal plans for each of them that he believes will change their lives forever.

Smarting from her recently canceled wedding and about to turn forty, Laurie Sassalyn returns to her Maine hometown of Calcasset to handle the estate of her great-aunt Dot, a spirited adventurer who lived to be ninety-three. Alongside boxes of Polaroids and pottery, a mysterious wooden duck shows up at the bottom of a cedar chest. Laurie’s curiosity is piqued, especially after she finds a love letter to the never-married Dot that ends with the line “And anyway, if you’re ever desperate, there are always ducks, darling.”

Emma Saylor doesn’t remember a lot about her mother, who died when Emma was 12. But she does remember the stories her mom told her about the big lake that went on forever, with cold, clear water and mossy trees at the edges. Now, it’s just Emma and her dad, and life is good, if a little predictable...until Emma is unexpectedly sent to spend the summer with her mother’s family, whom she hasn’t seen since she was a little girl.

Contains three complete, novel-length audiobooks in the Middle Falls Time Travel series.