A Los Angeles startup is creating buzz with its fashion-forward cell-phone cases; behind its breathtaking sales, the cracks are starting to show; its CEO does whatever he pleases, leaving his partners demoralized and the business unable to grow.

Candy maker Sweet Pete's has excellent products, but the business is failing.

Business is good at a South Carolina barbecue restaurant, but there is issues keeping up with the demands of hungry customers who are lined up outside.

Despite the owners' passion for wine, Amazing Grapes has never been profitable.

Marcus helps a cookie company owned by a 13-year-old entrepreneur and his mother that faces serious growing pains; Cory's mother struggles to trust anyone and resists change, leading to missed opportunities.

Pete Athans sank his life savings into building a high-end used car dealership.

Marcus returns to Farrell's, a business he helped revive in 2017, to find partners and management fighting each other.

A trailer business in Tampa, Fla. specializing in food concessions is being driven into the ground by two owners in a toxic partnership.

Marcus tries to help resolve bitterness between the co-owners of a Greenville, S.C. coffee company.

Marcus helps two feuding brothers who buy used cars for cash.

Maarse Florists was once thriving but lost its way after the founder's death.

Marcus visits A. Stein Meat Products, a second-generation business in Brooklyn.

Key West Key Lime Pie Company wins awards and makes millions--but no profit.

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A Milwaukee-based chain of soup restaurants needs professional help after its co-owner's sudden passing.

A Chicago snowboard shop goes downhill after its owners try to expand too quickly and stop communicating with one another.

Marcus Lemonis is in Orange County, California hoping to make a deal with JD Custom Designs. JD Custom Designs is a company that specializes in retail displays. The owner Jeff can't let go of control, which slows the process, limits creativity and negatively impacts the company.

A small-town spirits company needs Marcus' help to expand beyond their local community. Family-owned and operated, this business must come to terms with their past and agree on their future if they truly want a shot at the big time.

A business owner with a love of animals gives Marcus a new challenge. While her product is great, she lacks some of the business skills to bring it to the masses. Marcus will need to help her find the same passion for profits she has for her pets, if this business' true potential is to be unleashed.

LA Dogworks is a state-of-the-art dog care facility with a volatile leadership.

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Marcus returns to Coopersburg Sports, Key Lime Pie Co., Artistic Stitch and Unique Salon & Spa to reveal which partnerships have flourished.

Marcus helps a California entrepreneur who went all-in on a coffee business with no prior experience and got in over his head.

At a Detroit-based denim business, the three owners all have their own pet interests and goals; one owner stamps out any idea that he didn't come up with; another obsesses over the smallest of details; the third cares only about his own payout.