Summary: Fouad Haghighat is preparing to take over Pizza GoGo from his father. Undercover in the business, he discovers some shocking health and safety breaches, but also meets some inspirational workers. Strong language

Summary: Company director William Reeve goes undercover on the shop floor of multi million pound gaming business Paddy Power and unearths some shocking problems behind the scenes

Summary: Former celebrity hairdresser Jacqui McIntosh, now a senior manager of The Francesco Group, is on a mission to find out why the company's profits are down

Summary: Pam Finnis, managing director of one of Britain's biggest care home firms, goes undercover to investigate standards of care. The private care home industry has been plagued with problems. In 2011, scandal-hit Southern Cross - then Britain's biggest care home operator - collapsed under £50 million of debt. HC-One stepped in and took over a third of the homes. They now care for more than 10,000 people across 241 UK care homes, and the woman in charge of the day-to-day running of the company is Pam. Ex-nurse Pam finds going back to the floor tougher than she imagined. She discovers one home is in need of urgent refurbishment; she breaks down when she hears how her staff struggle to survive on their low wages; and she's upset to discover overstretched night shift staff unable to respond immediately to residents' calls for help. But Pam's also inspired by dedicated employees, some of whom choose to work on their days off in order to spend more time with residents.

Summary: Gunnar Blomdahl, CEO of one of the UK's biggest ferry companies, Stena Line, goes undercover on some of his own fleet of ships to find out if the business is delivering its promise of convenient, efficient and relaxing travel. Stena has recently invested over one billion pounds in increasing the look and size of its operation, but Gunnar is worried that standards have slipped. What he discovers undercover shocks him - paying customers onboard a building site at sea, sub-standard customer service, and flawed design on a brand new superferry. When he meets foreign crew earning less than the UK minimum wage and staff dealing with the uncertainty of seasonal contracts he faces difficult moral questions, and is moved by a Filipino crew member coming to terms with the death of his daughter while working away from his family. When Gunnar returns to head office he's determined to make changes.

Summary: Jim Rogers, Chairman and CEO of Kampgrounds of America Inc., the world's largest system of family friendly franchised and company-owned campgrounds, with 486 locations throughout North America, faces his fears when he must zipline while undercover at a KOA site. The active Eagle Scout witnesses a staff member confronted with a difficult guest and later learns to operate a tractor to dig up an infested tree.

Summary: Paul Damico, President of Moe’s Southwest Grill, has to bite his tongue after realizing one of his restaurant supervisors is being pushy and rude to the line workers. Later, Damico works with a catering director who goes out of her way to bring in new business for the company.

Summary: Sara Bittorf, Chief Brand Officer of Boston Market, goes undercover and struggles when taking orders, struggles to manage a busy, timed drive-thru window, is a bit slow when tasked with carving whole roasted chickens and makes the crucial decision to terminate an employee after he makes disparaging comments about the customers.

Summary: Toby Bost, CEO of O'Neill Clothing, USA, one of the largest surf wear and active lifestyle brands, is put in a difficult position when an employee's casual attitude crosses the line. Also, a stockroom worker encourages Bost to join him in doing pushups as a penalty, on Undercover Boss.

Summary: Andy Wirth, President and CEO of Squaw Valley and Alpine Meadows, two ski resorts located in Lake Tahoe, ventures to the top of an unsafe cliff to post warning signs while training with a ski patrol. Olympic Gold Medalist Jonny Moseley joins Wirth in a ruse to help protect his true identity in the small ski town

Summary: Andy Wiederhorn, CEO of Fatburger, a "fast casual" restaurant famous for their made-to-order burgers, goes on an undercover journey

Summary: Naren K. Gursahaney

Summary: When Eric Casaburi, CEO of Retro Fitness, a franchised full service fitness center, discovers an employee who hates customers and fails to follow directions, it leads to one of the biggest reveals ever on UNDERCOVER BOSS. Also, Casaburi works with an employee who credits Retro Fitness for a major lifestyle change

Summary: John Wilson, President and Chief Operating Officer of Rollins, Inc., the parent company for Orkin, North America’s largest pest control provider, cleans up a major cockroach infestation and tackles swarming bees.

Summary: Some of the most intriguing employees from the show's four seasons are featured. The hour examines how the "Undercover Boss" experience impacted their lives and reveals where they are now.

Summary: This special episode of Undercover Boss features updates on some of the most compelling bosses and how the undercover experience impacted them personally as well as the companies they lead. The bosses include the Diamond Resorts International CEO who created a crisis fund that saved an employee's life and the Kendall-Jackson Wine Estates President who has eased communication barriers among his workforce. Also, see where the Hooters CEO is now after experiencing one of the most shocking moments on the series and the Modell's Sporting Goods CEO's physical transformation.