Great Mysteries

Frank and Joe Hardy drive to the to see the new Bayport Airport. Before even getting there the boys are almost run over by an airplane flown by the airmail pilot Giles Ducroy. As a result of the event, Ducroy loses his job, blames the boys, and then frames them for a mail robbery. Although the boys don’t have an alibi they are bailed out of jail by Mr. Applegate (from The Tower Treasure) and Mr. Jefferson (from The Mystery of Cabin Island). The Hardy boys overhear Ducroy and two other criminals planning a major robbery.

In The Crash of Flight 3804, Investigative Journalist Charlotte Dennett digs into her father’s counterintelligence work, which pitted him against America’s wartime allies - the British, the French, and the Russians - in a covert battle for geopolitical and economic influence in the Middle East. Through vivid storytelling, extensive research, and deep analysis of region-defining maps, she reveals how feverish competition among intelligence networks, military, and Big Oil interests have fueled indiscriminate attacks and targeted killings that continue to this day.

It is a secret the Chinese government has been keeping for 40 years. They have proven the existence of dragons - a landmark discovery no one could ever believe is real and a scientific revelation that will amaze the world. Now the Chinese are ready to unveil their astonishing findings within the greatest zoo ever constructed. A small group of VIPs and journalists has been brought to the zoo deep within China to see these fabulous creatures for the first time.

Around 6000 BC, a revolution took place on Orkney and the Western Isles of Scotland. An outstanding collection of stone circles, standing stones, round towers, and passage mounds appeared seemingly out of nowhere. And yet many such monuments were not indigenous to Britain, but to regions of the Caspian Sea and the Mediterranean. Their creators were equally mysterious. Traditions tell of the Papae and Peti, "strangers from afar" who were physically different, dressed in white tunics, and lived aside from the regular population.

What is matter anyways? - From organisms to cells to proteins to molecules to atoms to electrons to light? The most famous equation in modern physics is Einstein's E=MC2, which, if we pause for a second, is as mysterious as anything written in our ancient religious scriptures and measurably more radical. My point is that the resistance we have to reductionists who say we are "just matter" is because we tend to think of matter as flat. It is, of course, anything but.

Tom Fitzgerald, better known as the Great Brain, is struggling to stay reformed now that his friends have threatened to shut him out if he pulls even one more swindle. But his younger brother, J. D., knows Tom's reformation makes for a dull life, and is not altogether unhappy - or blameless - when his brother's money-loving heart stealthily returns to business as usual.

The work of archaeology uncovers fascinating vestiges of humanity’s past, greatly enriching our knowledge of our ancestors and ourselves. Over the last century, archaeologists have increasingly ventured underwater, making spellbinding finds and opening an incredible new frontier for archaeological discovery. In the 12 delightful and eye-opening lectures of Underwater Archaeology: Mysteries of the Deep, Professor Lemke, an expert underwater archaeologist working in the field, invites you to discover astonishing treasures of history that lie beneath the waves.

It's 1895, and after the suicide of her mother, 16-year-old Gemma Doyle is shipped off from the life she knows in India to Spence, a proper boarding school in England. Lonely, guilt-ridden, and prone to visions of the future that have an uncomfortable habit of coming true, Gemma's reception there is a chilly one.

Two Bestselling Agatha Christie Novels in One Great Audiobook. Hercule Poirot solves his first case in the Agatha Christie novel that started it all, now in a fully restored edition that features a “missing chapter” along with commentary from Christie expert John Curran. In Agatha Christie’s classic, Five Little Pigs, beloved detective Hercule Poirot races to solve a case from out of the past.

No one knows for sure just how the ancient Egyptians built the Great Pyramid of Giza, which is taller than the Statue of Liberty. How could an ancient civilization have achieved this engineering feat? Perhaps the solution to this mystery can be answered with simple machines!

In the 1870s, grasshoppers known as Rocky Mountain locusts destroyed crops and farms across the Great Plains states, then were never seen again. Where did these bugs come from and where did they go? That's the great grasshopper mystery!

Nevada Barr quickly attracted the attention of mystery fans when her first Anna Pigeon mystery, Track of the Cat, appeared. Now she immerses the intrepid park ranger in a perilous search that will take her far below the waters of Lake Superior. As Anna spends her days patrolling its shores, the surface of Lake Superior fills with tourists. In the depths below lie an ancient ship and the bones of its sailors.

People in Adenville are breathing a sigh of relief. It seems that Tom D. Fitzgerald, the Great Brain, has truly reformed. For months, not one kid has been swindled and not one stunt has been pulled. But when he gets a new bike for Christmas, the Great Brain heads full speed into his old ways. And this time his ideas are bigger than ever. He puts all of Adenville in fear of a prehistoric beast from Skeleton Cave, solves a mysterious bank robbery, and captures the ghost of Silverload Mine.

Harry Flashman: the unrepentant bully of Tom Brown's schooldays, now with a Victoria Cross, has three main talents - horsemanship, facility with foreign languages and fornication. A reluctant military hero, Flashman plays a key part in most of the defining military campaigns of the 19th century, despite trying his utmost to escape them all. What caused the Indian Mutiny?

To this day, the low, thin wail of an infant can be heard in Keldale's lush green valleys. Three hundred years ago, as legend goes, the frightened Yorkshire villagers smothered a crying babe in Keldale Abbey, where they'd hidden to escape the ravages of Cromwell's raiders. Now into Keldale's pastoral web of old houses and older secrets comes Scotland Yard Inspector Thomas Lynley, the eighth earl of Asherton. Along with the redoubtable Detective Sergeant Barbara Havers, Lynley has been sent to solve a savage murder that has stunned the peaceful countryside.

Join the world's greatest detective, Nate the Great, as he solves three mysteries! Perfect for young listeners, this long-running chapter book series encourages children to problem-solve with Nate, using logical thinking to solve cases. Nate the Great, Where Are You?: Can a detective get a day off? Nate the Great and his dog, Sludge, want to take a break from solving cases. So, they hide out in the woods. But soon, they hear familiar voices shouting, "Nate the Great, where are you?" There are many mysteries to solve!

The Man in the Brown Suit is Agatha Christie at her best, as a young woman makes a dangerous decision to investigate a shocking “accidental” death she witnesses at a London tube station. Described by the Queen of Mystery herself as one of her favorites of her published works, Crooked House is a classic Agatha Christie thriller revolving around a devastating family mystery.

The Owl Express: Nate, the great detective, and his dog Sludge, hit the rails on their latest case. Their mission: To guard an owl named Hoot. Hoot belongs to Nate’s cousin, Olivia Sharp, and she thinks someone on the train might be out to get her feathered friend. Then Hoot disappears! The Tardy Tortoise: The sun is shining, the birds are singing, and someone is eating the flowers in Nate's garden. A green tortoise is slowly stepping across the lawn, and Nate is slowly following him. It may take all of Nate the Great's patience and sharp eyesight to find out slowly.

Jessie and Benny are participating in the Great Greenfield Bake-Off, a local baking competition for kids. But ingredients get mixed up during the competition, and then the power goes out. Is someone trying to put an end to the contest?

Chicago, 1923: Ten-year-old Dani Flanagan returns home to find police swarming the house, her parents dead. Michael Malone, the young patrolman assigned to the case, discovers there’s more to the situation—and to Dani Flanagan herself—than the authorities care to explore. Malone is told to shut his mouth, and Dani is sent away to live with her spinster aunts in Cleveland.