The challenge is upended as the pairs are split and new factions are formed. Plus, Gary and Dan take on a swarm of killer bees to chase a big food win.

Darrin leads a water pipeline build. Adam squares off with a deadly viper. Jarrell's fire blazes out of control. A survivalist is medically evacuated.

What starts out as a simple engine repair on a 1935 Roadster V8 turns into a full rebuild. The shop gets pushed to the limit on this car.

The Baggage Battlers head to London, home to six airports, where Billy, Mark and the Martins compete for the lost and unclaimed bags of the rich passengers.

Drew asks Michael and Maria to revamp a ventriloquist doll that's over 100 years old. Lighting expert Jolene is tasked with reviving a dusty chandelier.

Drew's at a 19th century Bradford weaving mill, where he discovers industrial trolleys and containers. In Cheshire, he visits a manor house mentioned in the Domesday book.

Drew browses a salvage fair by Ripley Castle. In Newcastle, he visits a dealer of mid-20th century designer furniture. And, he and Tee check out an art collection in Hastings.

A 1960 El Camino has been in a garage for 30 years, but as Derek works to revive this classic, he uncovers the vehicle's suspicious past.

Back at his family farm in North Dakota, Derek teams up with his brothers Chris and Sean to get their grandfather's 1946 Ford grain truck running.

Rick makes a shocking $1m call to open a new cut. Parker tasks Brennan with delivering more gold. Tony re-engineers Paradise Hill's water system.

Tony's crew defects to Parker's, leaving him to rely on less experienced operators. Parker's new hires create animosity as the team opens a new cut.

Tony blows up at Mike to get the trommel running. Two of Rick's crew face off while trying to dig out Valhalla. Kevin leans on Buzz to get more gold.

Parker does the unthinkable to get all of the Golden Mile's paydirt. Rick's mechanic Ryan considers leaving. Mike Beets finally fires up on the hill.

A lead in Montana keeps the crew's mining hopes alive in the lower 48. A Hail Mary prospect in Alaska becomes Dave's most promising ever.

Team Turin arrives in Alaska to mine their new Glacier Creek claim. The crew grapples with aging machinery as rookie Andrew gets his first taste of gold mining.

Mike discovers a 1985 Maserati Bi-Turbo that was converted to electric in the early 90s. Can they work on their first ever electric project and still profit?

Edd surprises Mike back in England by purchasing a 1916 Cadillac. The guys work hard to get the car ready for a 9000-mile endurance rally known as Peking to Paris.

As Arctic ice wreaks havoc on the fishing grounds, Rick risks losing a fortune in crab pots. Johnathan tests the Time Bandit's reinforced bow.

Rick, Parker and Kevin Beets face off in the first-ever rookie mine boss showdown to determine who is the top first-year miner.

It's a race against time for Slim Pickings when waste dirt creates a huge dust storm. Rod and Les near-destroy Sam's hoist while setting up her claim.

Ant falls for a 1989 Lotus Esprit, but it's a gamble after losing £10k on his last Lotus restoration. Plus, cracks appear in the farmhouse.