Sunday

When Les takes his niece Karen under his wing to help out at the jewelry counter, Ashley doesn't hide her jealousy well. But will her sky high bidding on a one of a kind sculpture win back her Dad's good favor? Or drive him mad? Plus, a smoking granny gets hotheaded over a fake purse with Les, while Seth and Bobby J contemplate a road trip when a retro VW bus rolls onto the lot.

Seth thinks Les is stuck in the past for hand delivering their gold to a refinery on the West Coast, and bets his dad that his new mail order service will provide a better return. But will the easy way pay off? Or cost the Golds a pretty penny? Plus, a senior strongman impresses the heck out of Ashley and Les, and Seth gets energized over an incredibly rare 1981 Bradley electric car.

Tensions between Karen and Ashley explode on the sales floor and when Les discovers that Ashley has banished Karen to a storage room he puts them both in the doghouse. Plus, Lady Gaga's bass player blows Les away with an act of kindness, and a guy tries selling Seth presidential autographs for 40 thousand dollars.

Les goes on a buying spree that leaves his staff wondering what's going on. Karen needs Byron's help to handle a pair of unruly piano players, and a nine-year-old kid gives Seth a run for his money on the sale of a rare sports item.

It’s make or break time for Aaron’s crazy Scat Pack Challenger transplant scheme, as Richard’s potential buyer will only be in town for one day, and if the build isn’t finished by then, Richard could potentially be saddled with two worthless cars.

Richard’s big gamble of bringing seven cars to this year’s Barrett-Jackson auction in Scottsdale, Arizona, is put to the test, as Aaron makes a pit stop in Las Vegas to oversee team Gas Monkey’s NHRA Top Fuel dragster.

Richard buys a ’78 Cutlass so Aaron can build Gas Monkey’s first ever lowrider, he only to discover that Aaron’s plan to create custom hydraulics is something he’s never attempted before.

As Richard heads to Houston to check out Gas Monkey’s top fuel NHRA dragster do some racing, the Monkeys need to do some racing of their own to finish a custom lowrider paint job on the ’78 Cutlass in time for the car’s debut.

Time is running out in the North Atlantic bluefin tuna season and; this week; every boat in the Gloucester fleet is facing a different challenge.

The tuna fishermen of Gloucester; Massachusetts; know that they have to rely on each other to get the job done; but sometimes trusting the competition isn’t such a good idea.