Host Don Wildman investigates a mysterious mass at the center of a presidential cover-up, a deadly device connected to a top-secret espionage mission behind enemy, and a doll that was part of an audacious undercover exploit to sneak medicine to wounded soldiers.

Top-secret experiments may have been conducted at former US Air Force base. Experts investigate disturbing phenomena at Skinwalker ranch. A long-lost cache of Civil War gold may have been found, and treasure hunters search for the Lost Dutchman mine.

Hidden in the Kansas Museum of History in Topeka is a piece of machinery that inadvertently contributed to one of the nation's most tragic natural disasters. On display at the Connecticut Air and Space Center is a craft that may alter the story of man's first flight. And the Cold War Museum in Virginia is home to a deadly contraption that is linked to one of the most perilous top secret missions in U.S. history.

Fright House: Secrets Revealed, is a one-hour Halloween special that peels back the layers of the scariest haunted house attraction in America: Thrillvania. While taking you on a step-by-step journey through the build-out of the attraction, industry experts demonstrate how to build, install and use various special effects, lights, sound and sensory tricks to create cost-effective, simple and fun displays for a top-notch Halloween experience.

First up, we'll hit the slopes in Whistler, Canada, and check out one of the world's most luxurious ski chalets. Known as Akasha - this 5,000-square-foot mountain top aerie combines rustic log cabin elements with Indian-inspired touches. Spread out over four levels, the home is centered around a spiral staircase, anchored by a 48-foot ancient red cedar. There's also a cozy two-story great room, luxurious master suite, and top floor cupola with 360-degree panoramic views. But head down to the base of the tree and you'll discover Akasha's star attraction - a 30-foot indoor lap pool with a cascading waterfall. Then we'll jet off to Italy's romantic Amalfi Coast and visit Positano's Torre di Clavel - an ancient stone fortress built into the side of a cliff. Built as a 12th century watchtower, the tower rises straight out of the sea on a promontory and includes eight bedrooms and over 10,000 square feet of indoor living space - a labyrinth of winding staircases, open-air hallways and sun-soaked terraces. Sitting on nearly five acres of land, the complex is made up of three separate living quarters over a total twelve levels. Explore the properties secrets - hidden nooks, ancient mosaics, and even an ancient subterranean grotto, accessible via a series of small staircases. Next up, we'll explore Jamaica's bustling resort town of Montego Bay and discover the one-of-a-kind Bambu Villa - a 10,000-square foot compound built in the 1960s on the site of an old plantation. Made up of interconnecting pavilions, Bambu has six bedrooms, lush tropical gardens, and sweeping views of the Caribbean. Its style combines classic Caribbean architecture with old-world Venetian glamour. From the classical archways and Italian sculptures to the dramatic swimming pool and sweeping central staircase, Bambu's old world influences are pretty obvious. Finally, we'll take a ferry to remote Orcas Island - one of the San Juans just off the coast of Washington state - and check out a mountainside EVH that's built to blend in. Located on a sloping 11-acre lot with stunning panoramic views, this ultra-modern, steel framed house was designed to fit into the landscape, only touching the ground via two slender concrete supports. Seeming to hover over the ground, the house opens up on both sides via broad multi-slide doors to facilitate maximum indoor-outdoor living. Just kick back, relax and watch the eagles soar right over the balcony.

It is the nerve center of America, the heart of government and the pulse of politics. It is a city sculpted out of marble, monuments, and history. But for every hallowed hall dedicated to truth and justice, there are dilapidated streets littered with poverty, crime, and corruption. It is a place people look to for wisdom and leadership, but it is also a place infused with murder, scandals, and lies. Marcus goes behind the façade of our nation's capitol to investigate three notorious crimes that have left their mark on Washington D.C. Marcus takes aim at the story of the Beltway Snipers, a pair of sociopaths who imposed their will on innocent people, killing at random and from afar. Marcus looks deep into the shadowy world of spies and the case of Robert Hanssen, a top FBI agent who betrayed his country for over two decades by selling deadly secrets to the Russians. Marcus delves into the world of spies and Hanssen's double life by talking to two men who knew him well, or thought they knew him. Marcus turns his focus to the shocking "rise and fall and rise again" career of Mayor Marion Barry. Marcus analyzes Barry's sordid history of accomplishments and addictions only to find a story of power and weakness, success and failure; a story that could only happen in Washington D.C.

First up, we'll explore the ancient Thai city Chiang Mai and check out an EVH nestled in the foothills of the Himalayas. Built by an American expat, the sprawling Villa Mae Rim was designed by the renowned architect Bill Bensley and built by local master craftsmen in a traditional Thai style. Built from locally sourced materials, the five-bedroom home is made up of seven interconnected pavilions interspersed with lush gardens and dramatic water features, including an enormous swimming pool. If you want to experience Villa Mae Rim first hand, rent out the Teak Pavilion, which serves as a private guest suite starting at about $6700 for an all-inclusive weeklong stay. Then we'll head into the hills of Laguna Beach, California and discover an unassuming EVH that's hiding some major secrets. Built in the early '90s by the Hanna family - of Hanna-Barbera cartoon fame - the 6,600-square-foot home has five bedrooms and six and a half baths spread out over four levels - all with fabulous views of the Pacific coast. With its whitewashed walls, high ceilings, and sleek wood floors, not to mention its major deck space, this house was designed to take advantage of the fabulous coastal vistas. But it was also built with a few secrets - namely two suites of hidden rooms accessible via secret panels in the pantry and master closet. Next up, we'll visit picturesque Mukilteo, Washington and check out a truly unusual EVH that you've got to see to believe. Located on a wooded bluff overlooking the Puget Sound, this notorious glass-walled home was designed in the late 1970s by architect Robert Champion to take advantage of the gorgeous natural surroundings. The five-bedroom home has an open floor plan topped off with a 145-foot vaulted skylight running the length of the home and a series of trippy stained glass windows. Check out the view from the master bath or settle into the cozy Jacuzzi and watch the sun go down. Finally, we'll explore the ancient British isle of Jersey and tour the historic Fort Leicester - a 19th century British fortress turned extreme vacation rental. Perched on a lonely cliff overlooking the picturesque Bouley Bay, this venerable castle was built to guard against potential French invasion, offering distant views of the Normandy coast. The three-level structure includes a kitchen, dining room and bedrooms, in what were once the guardroom and ammunitions store. Also visible is a converted cement bunker dating from the German occupation of the Jersey during World War II. Booked up to a year in advance through Jersey Heritage trust, prices start around $2500 a week.

St. Moritz, Switzerland- it's where the very rich and famous arrive in the winter to luxury shop and mingle over champagne- where how you look on the slopes is sometimes more important than how you do. It's a privileged world most of us will never belong to but would love to peek in on. Well Samantha Brown takes us to the Swiss Alps to see what St. Moritz is really all about. Situated in southeast Switzerland, just a three-hour car drive from Zurich, St. Moritz is a village of 6,000 residents that expands to accommodate nearly 100,000 travelers in the winter. Samantha's list of activities is more filled than ever; she'll learn a style secret when it comes to dressing fashionably for the slopes, enjoy a lunch of champagne and truffle pizza aboard the highest yacht club in the world, be serenaded by an alphorn quartet, and experience the run of her life on the world's only natural ice bobsled track. In 1930, the town of St. Moritz trademarked its name to control its image. Seventy-five years ago that was unheard of, but even then the town knew that more so than a physical destination St. Moritz was, for most of the world, a fantasy place. In reality, this is where royalty takes their winter family vacations, where celebrities don ski wear to either hide from or show off for the paparazzi. St. Moritz even has its own slogan- "Top of the World". And after experiencing the luxury, lifestyle, thrills and scenery of this alpine destination, Samantha feels it should be "St. Moritz: Out of the World".

Switzerland - it's famous for cheese, chocolates, watches, neutrality, and those overseas bank accounts. Samantha flies into Zurich, Switzerland and discovers what's it's like to vacation in one of Europe's most expensive cities. With just over a million people in the Zurich area, a disproportionate number happen to be millionaires - which is likely how the area earned itself the nickname Zu-reich (meaning "too rich"). Samantha discovers that although the streets are not lined with gold, there's plenty of it underground in the vaults of international banks headquartered in Zurich. But for Samantha there's only one thing that could be more valuable - Chocolate! She takes us to a shop called Sprungli, often considered the finest maker of chocolates in the world, to find out the real secret of why the Swiss are so crazy about this delicacy. There's no doubt that things run on time and like clock-work in Zurich, Samantha shops for watches and tries on a truly over-the-top dazzler with nearly 1,300 diamonds in it! And no matter what time of year, the outdoor farmer's markets are the best place to get a sense of the local flavor of a city - Samantha samples some of Switzerland's most famous export - cheese! And she'll uncover whether Swiss cheese really does come from Switzerland? Samantha explores the medieval streets of Zurich's Old Town and shops for the best "take home" gift in the hipper side of the city - the Niederdorf area. And when it comes to dining out - Samantha is introduced to a local custom of sharing your table. Many travelers to Switzerland often land in Zurich only to quickly head out to other parts of the country, but Samantha suggests that time spent exploring this jewel of a city will be well worth your while.

When it comes to the top city destinations in Europe if London is number one, Paris two, what do you think number three is? Dublin, Ireland.just ask the tourism office! Dublin is experiencing a massive revitalization, word has gotten out that this once very solidly Irish city is becoming more international and cosmopolitan - but Samantha isn't traveling to Ireland to eat fusion food or drink apple martinis - she's there to experience its traditional Irish heritage. But does the old Dublin still exist? In this episode of Passport to Europe Samantha travels to Ireland's capital city and finds out that authentic Dublin certainly does still exit, and you'll find it most entertainingly in its people! Samantha visits what is considered to be the city's cultural quarter - an area known as Temple Bar - at night this area is party central. To see what's happening around town, Sam makes a stop at Dublin's Tourist Office - which is like a community center for travelers. Here she finds the true meaning of the Irish saying, "Pog Ma Thoin". Now when it comes to great accommodations in Dublin, Sam has all angles covered - she finds one hotel that will please any traveler's budget - it's 99 Euros a night, and another that has the hippest address in the city. No trip to Ireland would be complete without drinking a pint of beer in a pub -- Sam meets up with a few locals and enjoys traditional music and stories on a pub-crawl around town. She also discovers the "secret" behind the colorful doors of Dublin, takes a carriage ride around St. Stephen's Green, and steps inside an incredible library and finds out the author of Dracula was a Dubliner. One of Ireland's most popular exports has to be Guiness beer - Sam discovers the connection between beer and the Guinness Book of World Records. Sam's tips for visiting Dublin; definitely see Trinity College, Book of Kells and St. Patrick's Cathedral, but don't forget that the true attraction of this city is the Dubliner himself.