Colchester Castle in Colchester, England, was where witch hunter Matthew Hopkins imprisoned and tortured several falsely accused witches in its dungeon. Alcázar de los Reyes Cristianos in Córdoba, Spain stands as a reminder of teenage heirs Princess Isabella and Prince Ferdinand who pursued their dreams of uniting the five kingdoms into one nation. Nichols-Rice-Cherry House in Houston, Texas was once the home of the aging William Rice who was schemed by his butler and a conniving lawyer to fake the millionaire's will and take his fortune to fund a university in his name.

After sentenced to death for thievery, doomed lovers, Henry Kable and Susannah Holmes are imprisoned at Norwich Castle in Norwich, England, but gets deported and transforms the penal colony of Australia. Quinta das Lágrimas in Coimbra, Portugal holds the legend of forbidden royal love between Prince Pedro and Inês de Castro, who after being slain on King Alonso IV's orders, her body was put on the throne by her beloved. Engineer Robert Fulton changed the way of long-distance travel when he built the first steamboat Clermont, named after his financier Robert Livingston's home Clermont Mansion in Germantown, New York.

With evidence from the Chinon Parchment, Don examines the origins of Friday the 13th at Paris' La Conciergerie when King Philip IV of France falsely accused and arrested the Knights Templar, causing their downfall. Arthur Conan Doyle revives his iconic character Sherlock Holmes through actor William Gillette who resurrects the sleuth on the stage and dedicates his home Gillette Castle in East Haddam, Connecticut to the detective

A heart-shaped stone at St Michael's Mount in Cornwall, England, pays tribute to "Jack the Giant Killer", a young farmer's son who took on a gigantic 18-foot fearsome foe who terrorized towns and villages across the land. Chapultepec Castle in Mexico City, Mexico, becomes the home of Maximilian I when he is deceived by his ally, France's Napoleon III, who forcefully got the Mexican people to appoint the Austrian archduke as their emperor. Penrhyn Castle in Bangor, Wales became the hiding place of Britain's most prized art collection to avoid the Blitz during World War II when director of the National Gallery, Kenneth Clark and his assistant Martin Davies stored the paintings there.

King Henry VIII's uncontrollable obsession to retain his reign by producing a male heir with his three wives paves the way for a tale of tragedy taking place at Hampton Court Palace near Surrey, England. Carlisle Castle in Carlisle, England was home to King William II, who's suspicious death led many to believe he was murdered by Walter Tirel, a possible assassin hired by his younger brother Henry I to ascend the throne. Schönbrunn Palace in Vienna, Austria becomes the showplace of inventor Wolfgang von Kempelen's creation "The Turk", a chess-playing automaton made for Empress Maria Theresa.

Philippsruhe Castle in Hanau, Germany, honors the work of Jacob and Wilhelm Grimm, who became the legendary storytellers, Brothers Grimm after revising crude folk tales into children-friendly fairy tales. When Fort Jefferson at Dry Tortugas National Park in Florida suffers a yellow fever epidemic, inmate Samuel Mudd, a doctor accused of playing a part in Abraham Lincoln’s assassination, redeems himself by saving 270 people from the disease. Château de Pau in Pau, France, the birthplace of King Henry IV, recalls the life of a benevolent monarch and the quest to find his missing mummified head.

Alchemist-astrologer Johannes Faust's desire for knowledge leads him into a pact with the devil with his demon Mephistopheles at Waardenburg Castle in Waardenburg, Netherlands. Rockfleet Castle, a strategic stronghold in Newport, County Mayo, Ireland becomes the center of Pirate queen Grace O'Malley and powerful chieftain Richard Burke who clash in a tale of passion, betrayal, and later, love. During the English Civil War, captured King Charles I plans an escape from at Carisbrooke Castle in Carisbrooke on the Isle of Wight, England.

After marrying the Countess of Ross to get lands and a title, Alexander Stewart, "The Wolf of Badenoch" pillages his way across the country, that even the Devil takes notice of his evil, and challenges him to play a deadly game of chess (presented by Dr Leo Ruickbie).[25] Gustav III's Pavilion in Solna, Sweden becomes the final resting place of the beloved King Gustav III after nobleman Jacob Johan Anckarström is so angered by the monarch's progressive liberal reforms that he assassinates him at a masquerade ball. Mount Helena in Rolling Fork, Mississippi was once home to a young woman named Helen who lost her fiancé Henry in a duel a week before their wedding and buried him on the same day

Castello di Malaspina in Fosdinovo, Italy becomes a tomb for Bianca Malaspina, an albino girl who defied her noble parents when she fell in love with a stable boy, causing them to brick her up alive in the dungeon. Upton House in Poole, England was a part of an inheritance dispute when a man from Wagga Wagga, Australia, claimed to be English aristocrat Roger Tichborne, the family's sole heir who drowned in a shipwreck 10 years prior. On Friday the 13th, December 1799, George Washington falls ill, and after doctors try to treat him with bloodletting, he passes away the next day in his home, Mount Vernon in Mount Vernon, Virginia, however, Dr. William Thornton proposes a radical procedure to reanimate him.

Wealthy widow Mary Eleanor Bowes falls prey to a scheme by fraudster Andrew Robinson Stoney who plotted marriage to steal her fortune at Glamis Castle in Glamis, Scotland. Lonely outcast-tuned-famous painter Henri de Toulouse-Lautrec changes the art world forever and it all began at his childhood home, Château du Bosc in Aveyron, France

After the Earl of Rutland's two sons die at their family estate, Belvoir Castle near Grantham, England, he believes they were cursed by the Witches of Belvoir. When the Catholic Church arrests revolutionary monk Martin Luther, his protestant supporters rescue him and escape to Wartburg Castle in Eisenach, Germany

Kensington Palace in London, England, Queen Victoria's birthplace, is celebrated for the brave monarch's help in baiting her assailant to his arrest after an assassination attempt. The Knight family, who created their dream home Vikingsholm in Tahoma, California, sets a place in aviation history by funding Charles Lindbergh's 1927 non-stop solo flight across the Atlantic

Château de Maillebois in Maillebois, France, was the launch pad for a contest between French aviators, Louis Blériot and Hubert Latham to be the first pilot to cross the English Channel. When his beloved Elizabeth Bowes-Lyon refuses his marriage proposals, the lovelorn Prince Albert has a secret cupid in Margaret Greville inside her estate, Polesden Lacey in Great Bookham, England. A kidnapping of a millionaire carried out by Verne Sankey, America's first public enemy #1 is connected to Boettcher Mansion in Golden, Colorado. When mathematician Émilie du Châtelet loses her fortune playing a high-stakes card game at Château de Fontainebleau in Fontainebleau, France, she creates a contract to pay it back.

Russborough House in County Wicklow, Ireland becomes the scene for one of the biggest art heists in the world when members of the IRA, including English radical Rose Dugdale stole 19 paintings from owner Alfred Lane Beit in 1974. The story of sizzling stage star Josephine Baker's mission to free France from Nazi occupation during World War II all started at her home, Château des Milandes in Périgord, France. Literary titan Charles Dickens conceals an illicit affair with 18-year-old actress Ellen Ternan, giving in to temptation on the grounds of Château d'Hardelot in Condette, France

A book thief pulls off an incredible heist that unfolds at the mountaintop retreat of Mont Sainte-Odile Abbey in the Vosges Mountains of France. York Castle in York, England was where infamous highwayman Dick Turpin was incarnated after being caught in a manhunt that ended his long crime spree. After Elizabeth Chudleigh, Duchess of Kingston is charged with bigamy by marrying in her youth Augustus Hervey, 3rd Earl of Bristol and then Evelyn Pierrepont, 2nd Duke of Kingston-upon-Hull, her rags to riches story ends in scandal, exiling her from Thoresby Hall in Nottinghamshire, England.

The legend of Scottish rebel William Wallace comes to an end when he is captured by English King Edward I at Chillingham Castle in Northumberland, England. Duchcov Chateau in Duchcov, Czech Republic is where the great seducer Giacomo Casanova spent his last days after losing his love for a married Frenchwoman. Kronborg Castle in Helsingør, Denmark once served as an observatory to astronomer Tycho Brahe who's sudden illness leading to his death was solved over 400 years later.

The prison at Oxford Castle in Oxford, England, was where lowly servant, Anne Greene overcame a shocking injustice by her employer and returned from the dead after being hanged in 1650. When his young son was diagnosed with rheumatoid arthritis, Italian immigrant Candido Jacuzzi's innovation of the Jacuzzi tub help eased his pain and funded the Jacuzzi Family Home in Sonoma, California. When philosopher Hugo Grotius is imprisoned for life after writing controversial papers on Arminianism, he stages an escape from the Netherlands' Loevestein Castle near Poederoijen.

After escaping from Dunstaffnage Castle in Oban, Scotland, Bonnie Prince Charles Edward Stuart flees the country with help from his supporter Flora MacDonald who disguised him as an Irish maid. After being in debt by building fairy tale castles, the eccentric King Ludwig II is forced out of his beloved Neuschwanstein Castle in Schwangau, Germany when he is deemed mad by psychiatrist Dr. Bernhard von Gudden. Dunrobin Castle in Golspie, Scotland becomes haunted by the ghost of Lady Margaret, the Earl of Sutherland's daughter after she fell to her death from a tower in order to be with her true love, a stable boy