"Nicky Roth should be happy--he's finally proven that his best friend, Aaron, and Aaron's younger sister, Mya, are missing. Better yet, the polic

Maths whizz Alice Jones has already cracked a mystery or two. But when a scientist vanishes from a locked room, she faces her toughest case yet.

It's been four months since Nicky Roth has seen his best friend and neighbor, Aaron Peterson. Aaron's father, a reclusive theme park designer, to

Alex Cross' son, Ali, is eager to follow in his father's footsteps as a detective, but when his best friend goes missing, what price will he have

"Treasure fever has hit Winkelfuss! A recently discovered map alleges that many years earlier, Cap'n Gnawface the Meanie buried her loot somewher

One morning, Cordelia awakens to discover that her father has disappeared, along with nearly all the monsters. With only a few clues left behind,

"No matter how dangerous his adventures have been, Art has always been able to count on his best friend, Camille. Now that Camille is meeting her

All Imogene Scott knows of her mother is the bedtime story her father told her as a child. It's the story of how her parents met: he, a forensic

Finn's been through so much, he'll now be allowed do what he wants with the rest of his life, right? Wrong. Whether he likes it or not, he's goin

A girl's quest to find her father leads her to an extended family of magical fighting booksellers who police the mythical Old World of England w

Though Gillian and her friends were the ones to find the lost doomsday bunker, no one seems to care about their thoughts on the whereabouts of it

When sixteen-year-old orphan Tessa Fell's older brother suddenly vanishes, her search for him leads her into Victorian-era London's dangerous sup