Divers race to recover a Second World War relic while a Canadian Armed Forces drill turns into a real emergency.

Big storms up the stakes as crews haul boats, move dangerous cargo, and find deep-sea coral wonders.

Two veteran captains risk it all on high-stakes missions using new strategies to chase big paydays.

Two captains fight to finish their missions while rescue units save 20 sailors caught in a brutal storm.

The crew's luck runs out after an amazing haul as Bruce boldly decides to steer to Cape Carnage; just as the move starts to pay off, devastating news bring their success to a halt.

In Greece, engineers battle earthquakes, unstable ground and coastal winds to build the country's first true skyscraper on the shores of the Mediterranean.

Gordon wants to invest the money from his melted gold stones into his own washing plant. Meanwhile, broken compressors and drills slow down large-scale miner James at 'Three Peaks'.

The Goldtimers gamble their last $6,000, Brad and Chris get expert advice that lands them some gold, and the Ferals face a killer snake.

The Poseidon Crew hunt a remote mountain pass, a gold drought puts huge pressure on Jacqui and Andrew, Levi and Bridget are left to hunt alone, and the Ferals hunt in the extreme Pilbara region.

Driving instructor Brian loved his Fiat 500 until it rusted away; now Sheldon and Peter must come up with a dream car for no more than 10,000 pounds to make any money.

Ken and Guillaume journey over a treacherous mountain pass. Cam stresses over getting Oklahoma welder Gary into the country. Mining couple Nika and Chris have a rough start to their season.

A disastrous fire cripples the Goldtimers' season, Marcus and Linden gamble on a new lease and expensive machinery, and the Ferals are forced to launch a rescue mission when Rob goes missing.

Jacqui and Andrew are stranded in the Palmer River region, Shane and Russell could finally hit a rich patch of nuggets, and the Poseidon Crew face a critical meeting.

On Vancouver Island, surfers, scientists, and a Tla-o-qui-aht carver brace for the Cascadia mega-quake - not if, but when.

Mining buddies Donnie and Ronnie have an explosive break-up that threatens Donnie's dream of owning his own lease; at the 1870 mine, Richie builds a gold room to start sorting out fine gold.

Big Al returns to the Yukon in a wheelchair, hoping to turn his life and his mine around.

A flood forces the Desert Diggers to call for help, new technology leads Jacqui and Andrew to a massive haul of gold, and Shane Calegari returns to Fantasy Gully to help Rusty.

Brent and his son Cayden set off on an adventure to find highly valuable crystalline gold, the Wanderers are forced to protect their patch from prying eyes, and Sheryl and Simon hit it big.

Ken fights the dangerous Moose Creek road in a desperate bid for fuel, Karl's sluice is dealt a near-fatal blow, and Big Al is shut out of high-stakes ground.

Gordon wants to invest the money from his melted gold stones into his own washing plant. Meanwhile, broken compressors and drills slow down large-scale miner James at 'Three Peaks'.

Inside Butler County Jail, the sheriff leads a fight against an opioid crisis. Investigators work to dismantle trafficking rings, while a rookie officer confronts the harsh cycle of repeat offenders.

The Poseidon Crew call in a trusted ally as time runs out, the Mackies detonate explosives to obliterate impenetrable rock, and Jacqui and Andrew gamble everything.

Anthony and Jodie want to get back to the serious business of finding sapphires but need to remove a big lump of granite first, and Matt and Amber go into partnership with a local miner.

It's the final days of the winter fishing season as the lake ice begins to melt and becomes dangerous; everyone is scrambling to bring in a big catch with big money on the line.