Enola Holmes, much younger sister of detective Sherlock Holmes, must travel to London in disguise to unravel the disappearance of her missing mother.

When her mother is abducted by aliens on Christmas Eve (or "Smekday" Eve since the Boov invasion), 11 year-old Tip hops in the family car and heads south to find her and meets an alien Boov mechanic who agrees to help her and save the planet from disaster.

Author Kevin Emerson channels Frank Cottrell Boyce in this tween sci-fi adventure about two kids from opposite sides of the country who find themselves on a road trip to save the world from an impending alien attack. Haley and Dodger have nothing in common. But that was before they learned about the strange, unexplainable phenomena in Juliette, Arizona. Before they both received summer research grants from a mysterious foundation and discovered their...

When their favorite author fails to arrive as scheduled to speak at the local library, the Alden children investigate how he could board a train and never be seen again.

"When horror writer Jake Konig suddenly disappears, Bryce and Ashley Timberline get caught in a mystery as scary as one of Konig's novels. A mysterious message on the writer's computer warns the twins to stay clear of Konig and his work. What's the real story?"--

On a cold winter day in Chicago, Early's father disappeared, and now she, her mother and her brother have been forced to flee their apartment and join the ranks of the homeless--and it is up to Early to hold her family together and solve the mystery surrounding her father.

"After finding a mysterious key, eleven-year-old Lin Rosenquist finds herself in the wintery world of Sylver where all the inhabitants were once either beloved pets or tamed wild animals, and must find the missing Winter Prince before she can return home" --

Eleven-year-old Tilly Pages, who has found comfort in her grandparents' bookshop since her mother's disappearance, now learns that she can bookwander into any stories, and decides to seek her mother.

"When otherworldly forces descend on their town of Whispering Pines, conspiracy theorist Rae, who's searching for her lost father, and Caden, who's haunted by the ghost of his brother, must band together to save their home."--

While attending an amusement park under the new ownership of their friend Daisy, Joe and Frank investigate the disappearance of a patron who was last seen riding a hit attraction, an event that has threatened Daisy's family's livelihood.