Marcus Lemonis looks back at which deals paid off big time and which cost him millions.

Marcus helps a Colorado manufacturer of tiny homes that faces massive issues, including an owner's lack of leadership, over a million dollars of debt, and low morale.

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.

Marcus helps Monica Potter's home goods store in rural Ohio; Monica has trouble relinquishing control to employees and her sister.

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.

Tonight on The Profit, Marcus Lemonis is in Morris, Illinois hoping to make a deal with Rayjus. Rayjus is a sports apparel company that specializes in fishing apparel. The name Rayjus is a combination of the first names of owners Ray Odom and Justin Romines. Rayjus has poor employee morale and unfocused owners, including one with a troubling side gig as a radio DJ. Rayjus also owes the IRS thousands in back taxes.

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.

Marcus helps a disorganized New York City fashion designer with unpaid loans and an understaffed store.

The owner of a packaged Southern food business bites off more than she can chew, bringing colossal debts that clog her cash flow.

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

A men's apparel business on the California coast is about to unravel completely for co-owners and brothers Mike and John, who found early success selling to big stores, but profitability never followed when they opened up two locations of their own.

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.

A Chicago startup impresses with their high-end sunglasses, but behind the flashy shades, the company struggles to turn a profit; its CEO has trouble moving beyond a personal tragedy, affecting every aspect of the business from marketing to hiring.

At a small family-run pizza chain, the proud patriarch is squeezing the life out of the business; he has long dreamed of taking his drive-through pizza concept nationwide, but he's so resistant to change that he alienates potential franchisees.

A Chicago-based lighting company sparks innovation with unique designs and customizable options, but the owner's lack of leadership causes sales to fizzle; if Marcus can't convince her to value her team, it may be lights out for this startup.

A women’s athleisure company found initial success building a following online, but the owner’s conservative aesthetic is starting to lose popularity, and she refuses to take any risks, despite suffering sales.

A husband-and-wife team work tirelessly to keep their maternity and children’s retail stores open, but after 10 years in business, they aren’t certain of their roles or their numbers, and their merchandise lacks universal appeal. Moreover, a recent health crisis put even more stress on the business and their marriage.