History, mystery, and science collide in a new series for middle-grade readers, perfect for fans of The Mysterious Benedict Society and Lemony Snicket! Jordan Stratford imagines an alternate 1826, where Ada Lovelace (the world’s first computer programmer) and Mary Shelley (author of Frankenstein) meet as girls and form a secret detective agency! Lady Ada Byron, age eleven, is a genius. Isolated, awkward and a bit rude—but a genius. Mary Godwin, age fourteen, is a romantic. Adventurous, astute, and kind, Mary is to become Ada’s first true friend. And together, the girls conspire to form the Wollstonecraft Detective Agency—a secret constabulary for the apprehension of clever criminals. Their first case involves a stolen heirloom, a false confession, and an array of fishy suspects. But it’s no match for the deductive powers and bold hearts of Ada and Mary. Mystery fans will love this tween girl riff on Sherlock Holmes and John Watson. History buffs will be delighted to see all the real figures who play a role in this story and appreciate the extensive backmatter that helps separate truth from fiction. Parents and educators hoping to promote the STEM fields for girls will be thrilled to have a series where two girls use math, science, and creative analytical thinking to solve crimes. But most especially--emerging readers will love this series filled with humor, action, intrigue and wonderful artwork from Kelly Murphy.

When the Wollstonecraft Detective Agency is approached by famous fossil hunter Mary Anning, the team know that this could be their most important case yet. Mary Anning's precious dog has been snatched - to get her back, the kidnappers demand she lie about fake dinosaur bones, and pretend they are genuine. Now the Wollstonecraft detectives have just three days to track down the fossil fakers, and save the integrity of science! The game is afoot- blood-sucking leeches, smoke bombs and diabolical disguises abound. And behind the lies and fakery, a genuine criminal may finally be revealed . . .

The history-mystery-science series continues as the Wollstonecraft Detectives--Ada Byron Lovelace and Mary Shelley--take on a case by royal request. Ada's imperious grandmother has absolutely shut the Wollstonecraft Detective Agency down--until they get a case from a princess, that is. The princess Alexandrina Victoria, age 9 (who will grow up to be Queeen Victoria), is the most closely watched girl in England. She is never alone. Every morsel she eats is catalogued. Every visitor overseen. Every move noted down. She has but one thing of her own--a sketchbook she uses as a secret diary, where she records her private thoughts in code. But now, somehow, that sketchbook has disappeared. And so the princess enlists Ada and Mary to figure out what has happened to the sketchbook without arousing the suspicions of her minders. A most clandestine case indeed! One that will involve breaking into Kensington Palace and uncovering a host of surprising royal secrets... This funny, Christmas-time romp of a caper will delight history and mystery fans alike.

The year is 1875, and twelve-year-old orphan Margret and her sister, Libby, are living with the kind Mrs. Fredriksen in her sod house in rural Littleton, Colorado. Margret would be happy to stay forever, but she knows that Libby, with her basic distrust of anyone other than Margret, will have them moving soon enough. Then a tornado sweeps through, bringing with it an injured horse. Immediately Margret lays claim to the horse, naming him Flynn, nursing him back to health, and teaching herself to ride. Now more than ever, Margret yearns for some stability in her life. Somehow, she’s got to find a way to convince Libby to stay so she can make Flynn hers. Powerfully written and historically accurate, this is a great addition to the series that’s tailor-made for girls who love horses and historical fiction.

Now in paperback, a second comic case to test the brains and bravery of the intrepid Wollstonecraft detectives--Ada Bryon Lovelace and Mary Shelley. The Wollstonecraft Detective Agency was supposed to be a secret constabulary, but after the success of their first case, all of London knows that Lady Ada and Mary are the girls to go to if you have a problem. Their latest case is a puzzler indeed: A dead father, a missing will, an escaped lunatic, and a hasty engagement. How does it all connect? With the help (and sometimes hindrance) of their sisters Jane and Allegra, these girls break codes, break a girl out of the hospital, and break up a very bad betrothal. Praise for The Case of the Girl in Grey: "Mystery fans ... will relish the girls' romp around the stately home; discovery of an encrypted clue (in the crypt, of course); and unraveling of the mystery."--Booklist Praise for The Case of the Missing Moonstone: "An enjoyable plot, resourceful heroines and fun writing." --Wall Street Journal "Smart and witty. . . . The detectives in training use quick thinking, book smarts, and social know-how to find a stolen gemstone. Comical narration and dialogue will charm readers thoroughly." --Publishers Weekly “Equal parts laughs and adventure, this lively mystery will keep you guessing till the end!” –Discovery Girls

Murderous ghosts and buried family secrets threaten young Eleanor and Alice Roosevelt in this thrilling middle-grade novel that puts a supernatural spin on alternate history. It's 1898 in New York City and ghosts exist among humans. When an unusual spirit takes up residence at the Roosevelt house, thirteen-year-old Eleanor and fourteen-year-old Alice are suspicious. The cousins don't get along, but they know something is not right. This ghost is more than a pesky nuisance. The authorities claim he's safe to be around, even as his mischievous behavior grows stranger and more menacing. It's almost like he wants to scare the Roosevelts out of their home - and no one seems to care! Meanwhile, Eleanor and Alice discover a dangerous ghost in the house where Alice was born and her mother died. Is someone else haunting the family? Introverted Eleanor and unruly Alice develop an unlikely friendship as they explore the family's dark, complicated history. It's up to them to destroy both ghosts and come to terms with their family's losses. Told from alternating perspectives, thrills and chills abound in Dianne K. Salerni's imaginative novel about a legendary family and the ghosts that haunt their secrets. A Junior Library Guild Gold Standard Selection

Offers an illustrated telling of the story of Ada Byron Lovelace, from her early creative fascination with mathematics and science and her devastating bout with measles, to the ground-breaking algorithm she wrote for Charles Babbage's analytical engine.