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'S11/E12 of 12 - Collapse'. The Arctic's frozen landscape continues to push the remaining survivalists to the brink. One participant finds themselves at-risk for frostbite, while another is convinced the end days are near.

'S13/E7 - Battle Of Black Lagoon'. Water levels are rising quickly, forcing Leron and Porkchop to race the incoming tide. Willie goes after his old foe, Black Lagoon. Ronnie and Ashley use their airboat to reach new honey holes.

'S4/E5 - Jaded'. When Jeff pulls a dirty trick on a competitor, will it save him a bunch of cash - or lose him a great deal?

'S4/E6 - Clean Sweep'. When Jeff buys a carful of clothes he doesn't want to help out a charity, will he be able to trick a greenhorn liquidator into getting him out of the deal?

'S8/E11 - Too Many Cooks In The Locker'. The buyers head to Lancaster, CA, Mary tries to strike a deal with Ally. Jarrod and Brandi turn up the heat, and Rene goes outside his territory to prove his dominance.

'S15/E7 of 20 - Close Encounters Of The Fifth Kind'. A 'Close Encounter of the Fifth Kind' is defined as direct human contact and communication with extraterrestrial life. But will this classification ever be useful in the future?

'S15/E8 of 20 - The Mysteries Of Alaska'. Could Alaska's many mysteries be due to a presence that is not of this world?

'S11/E12 of 12 - Collapse'. The Arctic's frozen landscape continues to push the remaining survivalists to the brink. One participant finds themselves at-risk for frostbite, while another is convinced the end days are near.

'S13/E7 - Battle Of Black Lagoon'. Water levels are rising quickly, forcing Leron and Porkchop to race the incoming tide. Willie goes after his old foe, Black Lagoon. Ronnie and Ashley use their airboat to reach new honey holes.

'S3/E3 of 10 - The Atocha: Secrets Of The Sterncastle'. Matty Blake and Tony Sampson join the Fisher family and their team to search the waters off Key West, Florida for sunken treasure connected to the Atocha.

'S3/E4 of 10 - Return To Poverty Island'. Taking a new approach, Rick Lagina and Matty Blake return to Poverty Island in Lake Michigan to search for millions in missing Civil War gold.

'S1/E4 of 6 - Spies In The Deep'. The team use one of the most advanced research ships on the planet to search the depths for a lost secret weapon of the Pentagon's arsenal: a secret spy plane that vanished into the Bermuda Triangle.

'S5/E30 - The O-Katana'. For the special 100th episode of Forged in Fire, four bladesmiths are tasked with forging a chopper and must choose from a mammoth pile of metals and materials from all previous 99 episodes.

'S5/E31 - The Hussar Saber'. Four smiths must think outside the box when tasked with using the canister method to forge a signature blade. Welding failures and abandoned canisters leave some of the competitors scrambling.

'S12/E19 - Secret Agent Man'. A 2004 World Series players ring swings by the shop. Will the guys hit this deal over the Green Monster? Chumlee spies a toy James Bond Aston Martin from the 1960s.

'S12/E20 - London Pawning'. Rick visits his buddy in England. Will Rick feel outclassed when he discovers that Regal Pawn owns a piece of the Titanic?

'S8/E12 - They'll Always Have Perris'. The valley of Perris hosts an early morning auction that has the buyers waking up early. Jarrod and Brandi start the day in high spirits, but things get tense.

'S8/E13 - Tinseltown Tussle'. North Hollywood sets the scene for another auction filled with dreams of hitting it big. Mary gets a leg up on the competition with a not-so-secret weapon.

'S8/E14 - Ivy For The Win'. Dave targets Jarrod and Brandi and the sparks begin to fly. Ivy strikes early in hope of landing a solid unit, but the bids quickly reach well into the thousands, leaving Mary struggling to keep up.

'S5/E1 - What's Up?'. As the team launches the next phase of their investigation on Skinwalker Ranch, a daring helicopter experiment reveals numerous UFO phenomena.

'S2/E7 - Ranch From Hell'. Andy and Paul team up with the investigator of Skinwalker Ranch to probe an abandoned New Mexico ranch whose owner claims is infested with malevolent demons.

'S3/E5 of 10 - North Carolina Gold'. Matty Blake travels to the North Carolina swamps to help a father and son treasure hunting team excavate an old mining dredge believed to contain vast riches connected to America's first Gold Rush.

'S3/E6 of 10 - Captain Bellamy's Bounty'. Rick Lagina, Tony Sampson and Matty Blake join Barry and Brandon Clifford to search for artefacts and treasure connected to the infamous Whydah shipwreck off the coast of Cape Cod.

'S5/E31 - The Hussar Saber'. Four smiths must think outside the box when tasked with using the canister method to forge a signature blade. Welding failures and abandoned canisters leave some of the competitors scrambling.

'S12/E19 - Secret Agent Man'. A 2004 World Series players ring swings by the shop. Will the guys hit this deal over the Green Monster? Chumlee spies a toy James Bond Aston Martin from the 1960s.