TV Guide Sky History Thursday

Rick tackles a football helmet signed by 28 Heisman Trophy winners, while Corey gears up to buy a devastatingly cool 'Transformers' toy for the shop. Rick tries not to go 'psycho' over an Alfred Hitchcock poster that makes a cameo in the shop

At Detroit's abandoned Packard plant, Mike gets a tour of an American landmark before it disappears. And in Buffalo, Retro Ron's collection features the Holy Grail of vintage bikes

Hugh Dennis is joined by a team of expert archaeologists to excavate back gardens around Britain, uncovering the lost history buried beneath our lawns and flower beds. This time, Hugh and the team are in the market town of Masham in North Yorkshire, hoping to find a Viking burial ground hidden underneath

Part one of two. Ex-MMA fighter and prospector Kru Williams, young explorer Taylor Starr and her father and master carver Don Froese, join seasoned legend hunter and mountaineer Adam Palmer to solve the mystery of Slumach's lost gold mine. The search for the riches sends the team 300kms away into the heart of mystery and murder. Back in Pitt Lake, an unlikely prospector arrives with a shocking claim

Ex-MMA fighter and prospector Kru Williams, young explorer Taylor Starr and her father, master carver Don Froese and hunter and mountaineer Adam Palmer examine 1940s document, the Carter Map, which reveals new clues pointing to the motherlode. The team races season-ending weather through unexplored terrain to find an X that marks the spot where Slumach possibly found his gold

A seller hops in with a first edition of Alice's Adventures in Wonderland. A pair of Red October Nike Air Yeezy 2s kicks into the shop, while another a seller brings in an autographed Casablanca movie poster

Everything seems like business as usual in West Covina, until a crazy-looking vintage Mercury Zephyr pulls up, revealing an old friend. Darrell and his buddy stumble over the ultimate Sketch artist. Ivy and his son can't seem to pick a lane, while Kenny and company find the time to make it all worthwhile

Kenny's fear of sharks inspires a controversial wardrobe choice, Rene brings his bargain army along to try to intimidate the competition, while he gets his slice of the loot. Darrell won't take no for an answer, moving full steam ahead

Barry rolls up to Riverside, California, with his own masked bidder, and the two develop a winning strategy. Brandi and Danielle's mystery balls take them to South America. Rene needs a cleanse after going through his risque room

Alice Roberts visits archaeological digs around the UK, starting with the west of Britain. She discovers lost First World War training trenches on Salisbury Plain, visits Britain's first 'double henge' discovered just down the road from Stonehenge, dives into the English Channel to explore an 18th-century East India company ship packed with silver, and unearths luxury foreign goods discovered at Tintagel, the legendary childhood home of King Arthur