Monday

In Mississippi, Mike and Frank find what turns out to be a priceless, 65-million year-old dinosaur bone. It's appraised by the curator of the Mississippi Museum of Natural Science. Next, they find a 1960's Bella German scooter judged among the best on the market at the time, and an antique audio recording device made from piano wire.

Brawling isn't out of the ordinary at American Jewelry and Loan, but when customers throw down in the parking lot before the doors even open, Les knows it's a bad sign. Inside, it's business as usual - with Seth and Ashley at each other's throats - but will they be able to keep it together and lend a hand when their dad needs them most? Or will their petty squabbling distract them until it's too late? With a shocking ending you won't want to miss - or ever forget.

With Les out of commission, Seth and Ashley run the shop as co-managers, but when Seth's decision to cut back on staff leaves Ashley alone on the floor with one too many crazy customers, it's clear that sharing duties just won't work. Les must decide who he'll leave in control of the store, and it's not going to go over well with everyone. Plus, a sweet vintage thunderbird cruises in - with a wacky owner who might just ruffle some feathers.

Jennifer troubleshoots the biggest load of her career--a Mini Max Airplane--that tests her patience. Marc doesn't have a minute to spare or he'll suffer huge consequences with this high dollar load.

Roy's truck comes to a screeching halt when it breaks down for the last time while Jarrett delivers a $150,000 restored Delorean to a nit-picking customer.

After 2017 Daytona 500 winner Kurt Busch makes a surprise visit to Gas Monkey, Richard strikes a deal to build him a '72 Pantera to race against fellow NASCAR champion Joey Logano.