With a line-up of hair-raising Halloween picks, the guys crawl back underground in Pennsylvania in search of the "Mole Man." Later, the guys look for rusty relics at an abandoned Oklahoma amusement park. In Missouri, Mike and Frank tour a former penitentiary with a seriously spooky vibe. Notorious for hauntings, the massive institution is one of the darkest and creepiest places they've ever picked.

In Kansas, Mike and Frank meet an octogenarian artist whose collection includes a shrine to each of his six ex-wives and every other woman he’s ever been with. Picking a fellow picker, the guys visit a sprawling junkyard that’s packed with rusty gold. Meanwhile, back in Iowa, Danielle discovers the guys have been keeping an expensive secret from her.

A Kansas junkyard is packed with rusty old cars, signs, and machinery, but it's nothing compared to the awesome collection inside. Later, in a town that was annihilated by a tornado, the guys put picking aside to jump-start a charity auction instead. Meanwhile in Iowa, the construction crew uncovers a costly surprise while breaking ground on the new store addition.

In search of a rare race car for an important museum client, the guys travel to Italy for what could be the biggest deal of their lives. But when their dolce vita dream goes bust, they hit the road and start picking. Outside Venice, Mike's old friend Flavio has a sweet collection of retro motorbikes. Plus, he puts the guys back on track with a series of leads and an energetic interpreter.

Once a roadie for a long list of fabled performers, Travis' home is like a rock'n'roll scrapbook. Later, in Louisiana, the guys get seriously fired up at the Bonnie & Clyde Ambush Museum. And while the collection is off limits, owner Boots offers up a promising lead. Down the road, the guys uncover a killer collection of negatives and a bass with a potential link to the King of Rock'n'Roll.

The guys reckon petroliana is plentiful in the Lone Star State, but tracking down a Texas-sized honey hole proves much trickier than expected. Still in search of a big-ticket trip saver, the guys move on to Illinois where they uncover one of the coolest cars they've ever seen. Meanwhile, in order to make a decent profit, Mike ups his $30,000 gamble on a Harley Knucklehead.

Mike and Frank are in Italy where they're determined to fill a shipping container with awesome artifacts they'd never find at home. With their translator Fred in tow, they follow a series of leads to an Italian mega-pick in Bologna. Down the road in Rome, they scour a sprawling collection that's stored underground in Roman catacombs where they fall for a skeletal Fiat 500 that's unlike anything they've ever seen before.

Leaving Italy behind, the guys drive clear across the continent to England where they haggle over an iconic red phone booth with a raunchy urban past. Next door, a British eccentric's garage is packed with motorized treasures. Down the road, the guys excavate a wall of junk, and Mike makes a mammoth bid on an ultra-rare motorbike. Meanwhile, Danielle and Robbie head to Oklahoma where their mega bumper car deal hits a series of snags.

The guys are freestyling in Kansas with a completely empty van when they stumble upon a staggering honey hole. Later, a couple's garage sale collection looks like a bust. That is, until the guys uncover barn after barn of awesome stuff. Meanwhile in Iowa, Danielle learns that Frank's coin-op motorbike is worth some serious coin.

In pursuit of a red-hot lead, the guys are in Oklahoma where they're determined to track down the motorbike that once belonged to legendary gangsters Bonnie and Clyde. Down the road, the owner of a sprawling salvage yard is notorious for hanging on to everything. Meanwhile in Iowa, Danielle seals the deal on the mother lode of retro movie posters.

On the third leg of their Italian adventure, Mike and Frank head south to Sicily where an American contact agrees to show them around. In a treasure-filled home, the guys try haggling over prices, but soon learn that Sicilian negotiating tactics include guilt and espresso! Looking for rare scooters, the guys visit a hardcore motorcycle collector and seal the deal on a rusty three-wheeled beauty. Later, the search is on for a very specific vintage Vespa.

Mike and Frank get off the road for a behind-the-scenes look back at their most memorable moments together. Along with Danielle, they've put together a retrospective of their dustiest adventures, most amazing discoveries, favorite characters along with some early, never before seen footage of Mike and Frank picking.

In Missouri, Mike and Frank stumble upon a labyrinth of curious finds during a freestyle pick. Down the road in Oklahoma, they tour a vintage car company where the owner's entire collection of retro relics is for sale. Meanwhile, the boys' crate of European treasure has landed in the States. And while Danielle handles logistics, Robbie delivers an expensive motorbike that may have been damaged during shipment.

In upstate New York, a fellow picker and former firefighter gives the guys unprecedented access to his jam-packed barns and sheds. Later, John Atwater Bradley has lived a celebrity-studded life and has amassed a glittering collection of oddities and memorabilia to prove it. Back in Iowa, the guys get their first glimpse of the new store addition.

A costume shop in upstate New York is an unlikely place for a pick, but owner Nicky and her husband have also amassed an entire barn full of awesome stuff. Later, Mike climbs over a wall of chairs to uncover a stash of Art Deco cigarette machines. Back in Iowa, an appraiser is awestruck by a recent find, and Mike's coveted 1911 Harley is finally ready for its first test drive.

Mike and Frank find themselves in paradise when they unearth an elephant, an alligator, and a life-size sculpture of Elvis in rural Vermont. While freestyling in New York, an awesome rusted-out trailer leads to a treasure trove of folk art finds and rare military memorabilia. Back in Iowa, Danielle gets encouraging news from an appraiser, but construction on the store is causing a headache.

In Colorado, a fast-talking negotiator is determined to get top dollar for every last piece of her collection. Down the road, a local artist has a killer collection of atomic age lamps and pricey glow-in-the-dark sculptures. Later, a lone mountain home features its own jailhouse, an underground bomb shelter, and an awesome collection of Western ware.

A 135-year-old Colorado opera house is packed with vintage Americana and Mike and Frank are determined to buy whatever they can. Down the road in Colorado Springs, the boys visit a fellow picker's junkyard home. And while the property is a bonanza of rusty gold, his prices are through the roof.

The deals are flying when a Colorado property turns out to be a mega-pick. Down the road in Massachusetts, the guys visit a one-of-a-kind classic car collection where they bid huge money on a 1961 Messerschmitt. Meanwhile in Nashville, Danielle lines up a potential buyer for the rare Fiat cutaway car the guys shipped back from Italy.

Scouring a mind-blowing collection of vintage petroliana in Massachusetts, Frank breaks a sweat and the bank when he uncovers the holy grail of oilcans. Later, in Rhode Island, the guys get a once-in-a-lifetime invitation to a mammoth Newport mansion where they bid big money on a series of rare gems.

Time has stood still on a sprawling Connecticut dairy farm, and after a slow start the picking is fast and furious. Down the road in Vermont, the guys pick one of the biggest barns they've ever seen and uncover ultra-rare skis for a Model T Ford.

Mike and Frank are in Springfield, Massachusetts, the birthplace of Indian Motorcycles. While there, the guys chase a legend that could be a real buried treasure, and drop a massive amount of cash on a stash of classic motorcycles.

The guys are invited to pick a petroliana-packed Vermont property. Later, Mike tackles two major projects in Iowa while Frank and Dave try to buy an ultra-rare cycle car in Florida.

Danielle and the guys kick it into overdrive when they land a high-profile custom pick for Dollywood, the theme park owned by legendary country music star Dolly Parton. A tribute to the Smokey Mountain Fire Patrol of the 1930s, the park's brand new roller coaster wouldn't be complete without some key pieces of vintage petroliana. And the team has just two weeks to uncover a long list of hard-to-find items.

Frank and Dave's road trip through Florida gets stranger at every turn, from a creepy collection of kitsch to a tugboat that's home to a Captain and his unusual pet. And back in Iowa, Mike readies the new shop for its Grand Opening.