The Whippet Hotel is a strange place full of strange and mysterious people. Each floor has its own quirks and secrets. Leo should know most of them - he is the maintenance man's son, after all. But a whole lot more mystery gets thrown his way when a series of cryptic boxes are left for him... boxes that lead him to hidden floors, strange puzzles, and unexpected alliances. Leo had better be quick on his feet, because the fate of the building he loves is at stake... and so is Leo's own future!

What would happen if you discovered that your family was one of the most powerful in human history? What if you were told that the source of the family's power was hidden around the world, in the form of 39 Clues? What if you were given a choice - take a million dollars and walk away...or get the first Clue? If you're Amy and Dan Cahill, you take the Clue - and begin a very dangerous race.

Ellingham Academy is a famous private school in Vermont for the brightest thinkers, inventors, and artists. It was founded by Albert Ellingham, an early 20th century tycoon, who wanted to make a wonderful place full of riddles, twisting pathways, and gardens. "A place", he said, "where learning is a game." Shortly after the school opened, his wife and daughter were kidnapped. The only real clue was a mocking riddle listing methods of murder, signed with the frightening pseudonym "Truly, Devious".

By sixth grade, Miranda and her best friend, Sal, know how to navigate their New York City neighborhood. They know where it's safe to go, like the local grocery store, and they know whom to avoid, like the crazy guy on the corner.

But things start to unravel. Sal gets punched by a new kid for what seems like no reason, and he shuts Miranda out of his life. The apartment key that Miranda's mom keeps hidden for emergencies is stolen. And then Miranda finds a mysterious note.

Eleven-year-old David is about to meet his new stepsister, Amanda, who is only one year older than he is. Amanda arrives at their big old house wearing a huge tattered shawl and carrying a sharp-eyed crow in a cage. She is hardly what David expects. Before long, she introduces David to a strange world of witchcraft and the occult. At first, spells and potions are fun. He enjoys the spooky chants and smoky seances. Even his younger brother and sisters join in, making sure their parents suspect nothing.

Ellie Jordan's job is to catch and remove unwanted ghosts. Part detective, part paranormal exterminator, Ellie operates out of Savannah, Georgia - the most haunted city in the United States. When a family contacts her to deal with a disturbing presence in the old mansion they've recently purchased, Ellie first believes it to be a typical, by-the-book specter, a residual haunting by a restless spirit. Instead she finds herself confronting an evil that is older and more powerful than she'd ever expected.

Nicky Roth has always been a lonely kid. But that all changes when he and his family move to Raven Brooks and meet their eccentric neighbors, the Petersons. Nicky befriends the Petersons' son, Aaron, bonding over their talents for tinkering. Soon the boys are inseparable and using their skills to pull pranks on the townspeople. But something about Aaron bothers Nicky - people seem almost afraid of him and his family.

Denise Farber has just moved back to New Orleans with her mom and stepdad. They left in the wake of Hurricane Katrina and have finally returned, wagering the last of their family's money on fixing up an old, rundown house and converting it to a bed and breakfast. Nothing seems to work around the place, which doesn't seem too weird to Denise. The unexplained noises are a little more out of the ordinary, but again, nothing too unusual. But when floors collapse, deadly objects rain down, and she hears creepy voices, it's clear to Denise that something more sinister lurks hidden here.

It was 1798 when the Morningstarr twins arrived in New York with a vision for a magnificent city: towering skyscrapers, dazzling machines, and winding train lines, all running on technology no one had ever seen before. Fifty-seven years later, the enigmatic architects disappeared, leaving behind for the people of New York the Old York Cipher - a puzzle laid into the shining city they constructed, at the end of which was promised a treasure beyond all imagining.

South Pole Santa is a story listeners of any age can enjoy, and one parents will love listening to with their children and grandchildren. Join 12-year-old Amanda Krumwerth and her family, who spend more time with their electronics and social media than they do with each other, and Marmel, Santa's head labeling elf, who wants to make sure the Krumwerths never get off the naughty list, to see if they can all find their way back to Christmas, with the help of flying penguins, Santa's younger brother, and an aging heavy metal rock star.

While looking out the window with her grandma's binoculars, Sammy witnesses a crime across the street at the Heavenly Hotel. What's worse, the thief saw her spying! As Sammy attempts to find the burglar who has made several other hits in the neighborhood, she finds herself trying to keep him from uncovering her - or worse, the police discovering that she's living illegally with her grandmother in the seniors-only housing!

In the caves beneath an Italian lake, the fossil of a creature older than the Earth has been disinterred. In the Judaean desert, a legendary parchment has been discovered. One reveals the secrets of heaven. One foretells an impending hell. And deciphering their message has been left to paleontologist Carter Cox - a man of science whose faith in the empirical is about to be shaken by forces of evil beyond imagining.

It's a hot, hot summer, and in the depths of the Toronto Transit Authority's Lost and Found, 17-year-old Duncan is cataloging lost things and sifting through accumulated junk. And between Jacob, the cranky old man who runs the place, and the endless dusty boxes overflowing with stuff no one will ever claim, Duncan's just about had enough. Then he finds a little leather book. It's a diary filled with the dark and dirty secrets of a twisted mind, a serial killer stalking his prey in the subway. And Duncan can't make himself stop reading.

Almost everybody who has grown up in Chicago knows about the Thorne Rooms. Housed in the Children’s Galleries of the Chicago Art Institute, they are a collection of 68 exquisitely crafted miniature rooms made in the 1930s by Mrs. James Ward Thorne. Each of the 68 rooms is designed in the style of a different historic period, and every detail is perfect, from the knobs on the doors to the candles in the candlesticks. Some might even say, the rooms are magic....

Atticus Higginbottom, a.k.a. Tick, is an average thirteen-year-old boy until the day a strange letter arrives in his mailbox. Postmarked from Alaska and cryptically signed with the initials "M.G.," the letter informs Tick that dangerous - perhaps even deadly - events have been set in motion that could result in the destruction of reality itself. M.G. promises to send Tick twelve riddles that will reveal on a certain day, at a certain time, at a certain place, something extraordinary will happen.

The Whippet Hotel is a strange place full of strange and mysterious people. Each floor has its own quirks and secrets. Leo should know most of them - he is the maintenance man's son, after all. But a whole lot more mystery gets thrown his way when a series of cryptic boxes are left for him... boxes that lead him to hidden floors, strange puzzles, and unexpected alliances. Leo had better be quick on his feet, because the fate of the building he loves is at stake... and so is Leo's own future!

Nora Lopez is 17 during the infamous New York summer of 1977, when the city is besieged by arson, a massive blackout, and a serial killer named Son of Sam who shoots young women on the streets. Nora's family life isn't going so well either: her bullying brother, Hector, is growing more threatening by the day, her mother is helpless and falling behind on the rent, and her father calls only on holidays. All Nora wants is to turn 17 and be on her own.

Eleven-year-old David is about to meet his new stepsister, Amanda, who is only one year older than he is. Amanda arrives at their big old house wearing a huge tattered shawl and carrying a sharp-eyed crow in a cage. She is hardly what David expects. Before long, she introduces David to a strange world of witchcraft and the occult. At first, spells and potions are fun. He enjoys the spooky chants and smoky seances. Even his younger brother and sisters join in, making sure their parents suspect nothing.

Ellingham Academy is a famous private school in Vermont for the brightest thinkers, inventors, and artists. It was founded by Albert Ellingham, an early 20th century tycoon, who wanted to make a wonderful place full of riddles, twisting pathways, and gardens. "A place", he said, "where learning is a game." Shortly after the school opened, his wife and daughter were kidnapped. The only real clue was a mocking riddle listing methods of murder, signed with the frightening pseudonym "Truly, Devious".

While looking out the window with her grandma's binoculars, Sammy witnesses a crime across the street at the Heavenly Hotel. What's worse, the thief saw her spying! As Sammy attempts to find the burglar who has made several other hits in the neighborhood, she finds herself trying to keep him from uncovering her - or worse, the police discovering that she's living illegally with her grandmother in the seniors-only housing!

Tom, an American, is in London for a conference when he begins to experience unusual forces in the Underground. Is it an easily-explained phenomenon - or ghosts from Britain's past?

Now: Sixteen-year-old Jesse is used to living with the echoes of the past. Her older brother died in the September 11th attacks, and her dad since has filled their home with anger and grief. When Jesse gets caught up with the wrong crowd, one momentary hate-fueled decision turns her life upside down. The only way to make amends is to face the past, starting Jesse on a journey that will reveal the truth about how her brother died. Then: In 2001, 16-year-old Alia is proud to be Muslim....it's being a teenager that she finds difficult.

If you've never read a Repairman Jack novel, this is the place to begin. It's 1990. A twenty-one-year-old named Jack has dropped out of college, leaving his old life behind to build a new one in New York City. Manhattan's rough edges are jagged enough to shred any unwary newcomer, but perhaps not one who is determined to stay off the grid, at any cost, in the busiest metropolis on earth. And to do so, he'll have to take jobs of a less than legal nature.

Welcome to Echo Falls. Home of a thousand secrets, where Ingrid Levin-Hill, super sleuth, never knows what will happen next.

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.

1987. There’s only one person who has ever truly understood fourteen-year-old June Elbus, and that’s her uncle, the renowned painter Finn Weiss. Shy at school and distant from her older sister, June can only be herself in Finn’s company; he is her godfather, confidant, and best friend. So when he dies, far too young, of a mysterious illness her mother can barely speak about, June’s world is turned upside down. But Finn’s death brings a surprise acquaintance into June’s life - someone who will help her to heal....

When Alexis's little sister Kasey becomes obsessed with an antique doll, Alexis thinks she is just being her usual weird self. Things get weirder, though, when their house starts changing. Doors open and close by themselves; water boils on the unlit stove; and an unplugged air conditioner blasts cold air.

After a botched escape plan from her boarding school, Abigail is stunned to discover the school is actually a cover for an elite spy ring called The Center, along with being training grounds for future spies. Even more shocking? Abigail's mother is a top agent for The Center and she has gone MIA, with valuable information that many people would like to have - at any cost. Along with a former nemesis and charming boy from her grade, Abigail goes through a crash course in Spy Training 101, often with hilarious - and sometimes painful - results.

Elizabeth has just started working as a page at the New York Circulating Material Repository - a lending library of objects, contemporary and historical, common and obscure. And secret, too - for in the repository's basement lies the Grimm Collection, a room of magical items straight from the Grimm Brother's fairy tales. But the magic mirrors and seven-league boots and other items are starting to disappear.

Bobby Phillips is an average 15-year-old boy. Until the morning he wakes up and can't see himself in the mirror. Not blind, not dreaming, Bobby is just plain invisible. There doesn't seem to be any rhyme or reason to Bobby's new condition; even his dad the physicist can't figure it out. For Bobby that means no school, no friends, no life. He's a missing person. Then he meets Alicia. She's blind, and Bobby can't resist talking to her, trusting her.