Mysteries

"It's 1880, and in the frigid city of Stockholm, death lurks around every corner. Twelve-year-old Mika knows that everyone in her orphanage will struggle to survive this winter. But at least the notorious serial killer the Night Raven is finally off the streets--or is he? Mika is shocked when a newborn baby is left at the orphanage in the middle of the night, by a boy with a cryptic message. Who is he? And who is this 'Dark Angel' he speaks of? When...

Sara Martinez is facing years in the juvenile detention system for hacking into the foster care computer system to prove that her foster parents are crooks. But then she gets a second chance when a mysterious man offers her a chance to join a group of MI6 affiliated spies.

SoHo, 1981. Twelve-year-old Olympia is an artist -- and in her neighborhood, that's normal. Her dad and his business partner Apollo bring antique paintings back to life, while her mother makes intricate sculptures in a corner of their loft, leaving Ollie to roam the streets of New York with her best friends Richard and Alex, drawing everything that catches her eye. Then everything falls apart. Ollie's dad disappears in the middle of the night, leaving...

In 1937, ten-year-old Henry Shipley must rely on a talking cat named Lantern Sam and a kindly conductor named Clarence to help solve the kidnapping of a young heiress aboard the Lake Erie Shoreliner passenger train.

Twelve-year-old Candice Miller is spending the summer in Lambert, South Carolina, in the old house that belonged to her grandmother, who died after being dismissed as city manager for having the city tennis courts dug up looking for buried treasure--but when she finds the letter that sent her grandmother on the treasure hunt, she finds herself caught up in the mystery and, with the help of her new friend and fellow book-worm, Brandon, she sets out...

"Nothing exciting ever happens in the small town of Newpark where Brian, Hannah, and twins Chris and Sam live. And when they start their summer vacation, they know it’s the end of an era. The Misfits Club, a club they started when they were 8 years old, is disbanding and they still haven’t managed to solve any real mysteries. But when they persuade new club member Amelia to go and investigate a spooky old house, they unexpectedly discover some...

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.

Bedeviled by evil fairies that only she can see, thirteen-year-old Tanya is sent to stay with her cold and distant grandmother at Elvesden Manor, where she and the caretaker's son solve a disturbing mystery that leads them to the discovery that Tanya's life is in danger.

A mouse who lives in Sherlock Holmes' cellar evolves a daring plan to uncover the identity of a kidnapper.

Twelve-year-old Theo uses arcane knowledge and her own special talent when she encounters two secret societies, one sworn to protect the world from ancient Egyptian magic and one planning to harness it to bring chaos to the world, both of which want a valuable artifact stolen from the London museum for which her parents work.