Mystery Riddles

When Grady and his dad learn that the town oddball, Eudora "Kooky" Klinch, left something for them in her will, they can only imagine what it might be. When it turns out it's an old scrap of 300-year-old tapestry, they are bitterly disappointed. But the cloth comes with a note saying, "This is no ordinary piece of needlework. It's a treasure map. Riddles and Clues. To the victor go the riches." Grady's dad dismisses it, but Grady thinks this could be the chance of a lifetime.

Seventy thousand years ago, the human race almost went extinct. We survived, but no one knows how.

Until now. The countdown to the next stage of human evolution is about to begin, and humanity might not survive this time. The Immari are good at keeping secrets. For 2,000 years, they've hidden the truth about human evolution. They've also searched for an ancient enemy - a threat that could wipe out the human race. Now the search is over.

When Zoe Faust sees the ghost of a murdered young woman, is it really a spirit—or a flesh and blood woman who stopped aging because she’s a fellow alchemist? Sixteen years ago, high school student Ridley Price discovered a secret she planned to reveal through a party game—but someone killed her first. The baffling crime was never solved. Zoe’s friend Heather has always wondered: Which of the seven guests at the party killed Ridley? When the newly appeared ghost turns dangerous, threatening people they love, Zoe teams up with her gargoyle roommate to unmask the supposed specter.

Dr. Sam Anderson is one of the most celebrated scientists in history. Ten years ago, he invented a device that changed the world forever. Now his life is about to be ripped apart—and his own creation may be to blame. One fateful morning, Sam discovers that his girlfriend has been murdered and that his daughter is accused of the crime. Sam believes she's innocent, but he can't prove it. There's only one thing he can do to save his daughter: confess to the crime. And so he does. But in the future, murderers aren't sent to prison. They're sent to the past.

Belle lives in a beautiful castle with a Beast and Enchanted Objects that have come to life. But that isn’t the strangest thing about the castle. Rose petals and leaves have begun to mysteriously appear in random places, leading Belle and her companions Cogsworth the clock and Lumiere the candelabra on a hunt for an intruder.

They decimated Earth during the Long Winter. Now the Grid has returned, and they won't stop until the human race is extinct. On a ruined world, humanity's last survivors fight against impossible odds. In their darkest hour, they discover a new hope for survival. But it comes at an unthinkable price, with consequences that will change everything.

In Marbella, Spain, Dr. Kate Warner awakens to a horrifying reality: the human race stands on the brink of extinction. A pandemic unlike any before it has swept the globe. Nearly a billion people are dead--and those the Atlantis Plague doesn't kill, it transforms at the genetic level. A few rapidly evolve. The remainder devolve. As the world slips into chaos, radical solutions emerge. Industrialized nations offer a miracle drug, Orchid, which they mass produce and distribute to refugee camps around the world. But Orchid is merely a way to buy time. It treats the symptoms of the plague but never actually cures the disease.

After a mysterious global event known only as “The Change”, six strangers wake up in an underground research facility where they learn that they’re part of the Extinction Trials - a scientific experiment to restart the human race. But the Extinction Trials harbors a very big secret. And so does the world outside.

Northern Morocco: Dr. Kate Warner cured a global pandemic, and she thought she could cure herself. She was wrong. And she was wrong about the scope of the Atlantis conspiracy. Humanity faces a new threat, an enemy beyond imagination. With her own time running out and the utter collapse of human civilization looming, a new hope arrives: a coded message from a potential ally.

Rex and Dora face their most difficult puzzle yet. First, they have to uncover the real identity of the victim. Only then can they determine who had the motive to kill. But in the Eternal City, the past and present are intertwined. Old flames return, past grudges re-emerge, and regrets bring consequences. Before the case ends, they'll have to answer a riddle. What is more important—solving the case or saving the life of a friend?

Bacca has it all. The most celebrated (and furry) star in the Overworld, he's the person others look to for help building their dungeons, mazes, and castles. He has a girlfriend, LadyBacc, and his most prized possession of all - a diamond ax called Betty. One day Bacca is approached by a mysterious dragon...made entirely of diamonds! The dragon is from a new biome - a secret land few have ever seen - where a special object has been stolen.

Detective Kate Rosetti is not a big fan of February 14th. Even worse than gigantic bouquets of roses and buckets of chocolate, however, are the love notes she’s been receiving from infamous serial killer Ramone Wilkes, the man who very nearly stole her life. When she finds out that he’s escaped from prison, she knows the chances are good that he’s making his way north to the streets of St. Paul to finish the job he started two years ago. Capturing Ramone “The Dentist” Wilkes during his first killing spree was no breeze, and this time, luck might not be on her side.

On the afternoon of July 30, 1975, former Teamsters president Jimmy Hoffa left the parking lot of the Machus Red Fox Restaurant in Bloomfield Hills, Michigan, never to be seen again. In this story by two-time Edgar Award-winning, New York Times best-selling author Steve Hamilton, Alex McKnight - a former Detroit cop - is sitting at the rail in the Glasgow Inn when a local old-timer tells him an unusual story. It’s the kind of small-town mystery that won’t let Alex sleep at night, but when he goes hunting for answers, he stumbles upon the biggest surprise of his life.

Riddle of the Sands is set during the long suspicious years leading up to the First World War and is a classic of spy fiction.

In Atlanta, Dr. Peyton Shaw is awakened by the phone call she has dreaded for years. As the CDC's leading epidemiologist, she's among the first responders to outbreaks around the world. It's a lonely and dangerous job, but it's her life - and she's good at it. This time she may have met her match. In Kenya, an Ebola-like pathogen has infected two Americans. One lies at death's door. With the clock ticking, Peyton assembles her team and joins personnel from the Kenyan Ministry of Health and the WHO.

Grayson Hawthorne was raised as the heir apparent to his billionaire grandfather, taught from the cradle to put family first. Now the great Tobias Hawthorne is dead and his family disinherited, but some lessons linger. When Grayson’s half-sisters find themselves in trouble, he swoops in to do what he does best: take care of the problem—efficiently, effectively, mercilessly. And without getting bogged down in emotional entanglements.

At the end of the world, a groundbreaking scientific experiment will change everything. Dr. Laura Reynolds had it all. A job she loved. The respect of her peers. Student debt she was slowly chipping away at. And one day, it all went away. She saw the wrong thing—a colleague's mistake. And to escape, he framed her. Laura's only option is to join a secretive research project in Antarctica, where she hopes to keep practicing medicine and one day get her life back. But soon after arriving, she realizes that things aren't what they seem in this advanced facility.

Dr. Tyson Klein is a quantum physicist who has dedicated his entire life to his research. At CERN, he analyses data generated by the Large Hadron Collider, the world's biggest and most powerful particle accelerator. Now, Ty believes he's found a pattern in its output. It looks like an organised data stream, being broadcast over what he calls a quantum radio. Could it be a signal from another universe? A message sent from the future? Or something else entirely?

The beloved American Girl History Mysteries features intrepid girls faced with intriguing situations. The author of this installment, Kathryn Reiss, has received the ALA Best Book for Young Adults Award. In Riddle of the Prairie Bride, it's 1878 and Ida Deming and her papa are looking forward to meeting his mail-order bride. But is this woman really who she claims to be?

A mysterious entity known only as “The Sphinx” is planning to exterminate humanity. But who—and where are they? And how—and when will they carry out their plans? Can Malia and Jaden find them before it’s too late?