Sunday

As the season's end nears, with the newcomers in the lead, one OG hits his breaking point.

In this enhanced episode the Gloucester bluefin tuna fishermen face their most challenging year yet.

One veteran captain hits his stride; the fleet faces low demand in an uncertain market.

When Les gets a last-minute invite to give a lecture at a local business school, Seth takes the pressure off by writing his speech. Can Les pull it off? Or will Seth's words translate into a disaster? Plus, Ashley and Bobby J go to war over a collection of Nerf guns, and negotiations hit a fever pitch when a wannabe ventriloquist walks in with a dummy that bears a striking resemblance to one of the Golds.

Les questions Ashley's management skills after two employees get into a fight on the shop floor. Will Ashley succeed as a peacemaker or create an even bigger problem? Meanwhile, Seth stumbles upon what could possibly be the biggest memorabilia deal the store has ever seen, but will it tank?

Les hatches a secret plan to put his employees to the test, but how will Seth, Ashley and Karen react when they find out they've also been put under the microscope? Plus, a man in search of the perfect engagement ring ends up giving everyone road rage when he blocks the store parking lot with his truck

When Ashley interferes with one of Karen's sales on the shop floor, a family feud breaks out. Les urges them to work together, but when Ashley's half-hearted efforts to mentor Karen almost result in a big loss for the store, Les has had enough. Plus, Seth gets quite the show when a rock metal group shopping for a guitar breaks out into an impromptu jam session.

Les finally lands a buyer for his special edition Lee Iacocca Mustang, but loses his cool when he learns Seth sent the hot rod out on consignment. Can Seth get the car back in time? Plus, Ashley sniffs out a bad deal on a Pepe le Pew statue, and Byron shows a Rick James wannabe the front door.

A customer's dunk tank inspires Karen to come up with a big idea for the shop. Seth and Les are on board, but will Ashley be down for the cause when she finds out what they have planned for her? Plus, Byron puts two hockey fans in the penalty box when they get physical over a vintage puck.

It's the day of the big event. Can ringmaster Karen pull it off without a hitch? Or will someone sabotage her efforts to impress her Uncle Les? And later, Ashley gives Les an ultimatum that could change the history of American Jewelry and Loan forever.

As owners of Detroit's biggest pawn shop, the Golds have bought and sold things you can't imagine. Each day brings new danger as they operate in a majorly troubled city. There are millions to be made, but their profits come with risk.

The guys pick up the pace on their '49 Chevy. Plus, the Gas Monkey Monster Jam truck goes up against Dennis Anderson's Grave Digger.

Richard buys into Aaron's plan to build a first-ever '72 Pantera fitted with a custom turbo-charged Ford EcoBoost V6 engine.

A last-minute problem arises with the turbo-charged EcoBoost '72 Ford Pantera Aaron is building for the new Barrett-Jackson auction out on the east coast.

Aaron tasks the Monkeys with building a '55 Chevy that Richard plans to sell with around a million dollars' worth of other cars at a Barrett-Jackson auction.

The new boats team up to outfish the original Gloucester fleet.