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.

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.

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.

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.

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.

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.

"Walt Disney was... kidnapped?" From Amazon #1 Best-Selling Author... When Walt Disney is abducted from his office in Disneyland, FBI Agent Lacie Webb is plunged into an investigation that twists through the darkest corners of the legendary empire. Beneath the cheerful music, spinning teacups, and glowing castle, she discovers a labyrinth of cryptic riddles, buried secrets, and a conspiracy so dangerous, it could dismantle the legacy of Walt Disney himself. But the riddles are more than just keys to the truth… they're a test. Each answer brings Lacie closer to unraveling a decades-old ...

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.

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?

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.

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.

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?

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.

By the 16th of July, the Master of Lonsdale was concerned but not yet worried. Dr Browne-Smith had passed through the porter's lodge at approximately 8:15 a.m. on the morning of Friday, 11th July. And nobody had heard from him since. Plenty of time to disappear, thought Morse. And plenty of time, too, for someone to commit murder....

He was forced to hang up his badge. Now, a kidnapping has raced into his retirement.England, 1960’s. Former inspector Tom Ramsay is taking advantage of having to step down. Invalided after getting shot in the line of duty, the plain-speaking man adopts a border collie and gets down to the serious business of hiking the scenic countryside of his ancestry. But after hearing over the radio about a missing local, the fifty-five-year-old ex-cop is shocked when a pleasant walk brings him face-to-face with the victim fleeing her captors. With the young woman reported as a runaway and no ransom ...

Some time has passed since the inimitable quartet of Reynie, Sticky, Kate, and Constance have had a mission together. But with the arrival of a new Society member - and a new threat - they must reunite to face dilemmas more dangerous than ever before, including the villainous Mr. Curtain and a telepathic enemy tracking their every move, not to mention a dramatically preteen Constance. In its triumphant return, the Society encounters all new challenges, but the series' trademark sly humor, sweet camaraderie, hairsbreadth escapes, and mind-bending puzzles are all as engaging as ever.

This collection includes: Ballpark Mysteries #6: The Wrigley Riddle: Ivy-covered walls--they're the most famous part of the Chicago Cubs' historic ballpark, Wrigley Field. Mike and Kate can't wait to get down on the field to see the ivy for themselves. But when they do, they're horrified to discover patches of the ivy have been ripped away! Who would want to sabotage the stadium?

"Remember, remember the fifth of November, gunpowder, treason, and plot!" November 1926. When three ravens die in mysterious circumstances, Inspector Graves and his protégé Constable Carver are sent to the Tower of London to investigate. After all, the ravens belong to the King, and an ancient legend states that if the Tower is without ravens the kingdom will fall! Once they arrive the detectives find a unique community steeped in secrets. But when a Beefeater is shot dead just yards away from where Graves and Carver are standing, it appears a more sinister plot is underway, a plot that ...

The halloween party takes a gave turn when a group of kids are randomly chosen by a black hooded figure to enter a haunted house, They must solve a series of riddles throughout the mansion and attempt to make it out alive. Each room is filled with horrific things that bring out the fears of each who entered the mansion. Each person must figure the riddles out for themselves, or they suffer dire consequences.

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.