History is made when all five Sharks join forces to make a deal. Also, a recent college graduate from Indianapolis, IN wants to turn inconvenience into opportunity with his ticketless coat check system; a man from Central City, CO wants the Sharks to invest in his belt buckle idea that doubles as a beverage holder; a licensed massage therapist from Phoenix, AZ takes a stand to reinvigorate the ancient art of body massage; and two women from Freehold, NJ believe they have a solution to the nationwide epidemic of bedbugs. Also, an update on Rick Hopper from Fullerton, CA and his Readerest eyeglass holder, which Lori Greiner invested in during Season 3.

When a man from Austin, TX pitches a so-called "cheaters app" - which allows selected contacts to be hidden from view when calls come in - the Sharks question and debate the morality of investing in an app that could be used to make it easier for people in relationships to cheat. Also, two business partners from Bedford, NH have top-ranked champion surfer Lakey Peterson demonstrate to the Sharks how their surf-inspired exercise equipment works; a dapper man from Acworth, GA pitches a personal style system that will help the Average Joe look and feel like an alpha male; and two women from Omaha, NE hope to make a sweet deal where customers can design their own personalized ice cream and gelato flavors. In addition, there will be an update on the recent success of Tower Paddle Boards, a business Mark Cuban invested in with Stephan Aarstol from San Diego, CA.

In a star-studded episode, husband and wife professional dancing team Jonathan Roberts and Anna Trebunskaya demonstrate a posture correction device designed by two business partners from Portland, OR. Entertainment celebrity reporter and writer Robin Leach joins a Hollywood, FL-based designer in his pitch of unique stone-studded leather jewelry that will make the wearer look and feel good. Also, a couple from Warren, VT hope the Sharks will want to bite into their decadent 100% vegan and gluten free cookie business; and a divorced mom from Lafayette, LA who calls herself The Diaper Queen pitches her reusable cloth diaper business. In a follow up segment, Stephan Aarstol from San Diego, CA gives an update on Tower Paddle Boards, a stand up paddle board business Mark Cuban invested in during Season 3.

The Sharks are brought to tears when an unemployed husband and his pregnant wife from Tampa, FL, pitch their party-favorite chicken dip; an injured NFL athlete from Draper, VT hopes to get in the business game with his spring loaded laundry hamper; two brothers from Kansas City, MO hope to make life a little easier with a plastic sleeve that can turn a zip bag into a bowl; and a technophobe hopes every household in America will want to keep track of their keys or cell phone with help from his distinctive, wireless gadget. In a follow up segment, Fleetwood from Dallas, TX gives an update on his customized cruiser bike business, Villy Customs, which Barbara and Mark invested in during Season 3.

The rivalry between Lori and Daymond turns ugly as they compete for the business of a woman from Los Angeles, CA, who created a line of dresses made from pillowcases. Later on, the Sharks can't stop laughing when a young lady from Easley, SC announces the name of her specially-made spatula that can retrieve cream from the bottom of containers. Also, the Sharks appear more feisty than usual after a father and son from Van Nuys, CA provide them with a sample from their line of vitamin oral sprays; and a man from Marysville, WA hopes his energy boost waffle product will be an eye opener for the Sharks. In a follow-up segment, there's an update on brothers David & Stuart Pikoff from Austin, TX, who passed on Kevin's Season 2 offer to invest in their Games2U mobile entertainment business.

With help from two-time Super Bowl champion and San Francisco 49er running back Brandon Jacobs, a woman from Morganville, NJ hopes to propel her protein-infused energy drink to the next level. Two cousins from Portland, ME ask the Sharks to bite into their signature lobster-roll food truck business; an engaged couple from Marina del Rey, CA hope the Sharks won't think the secret ingredient in their eco-friendly cleaning products is too nutty; and a colorful character from Wilmington, NC has a business idea to put an end to the moist handshake with his colorful drink insulators. In a follow up segment, Dallas Robinson & Mike Buonomo from Riverton, UT give an update on their mix-and-match lip balm, Kisstixx, which Mark Cuban invested in during Season 3.

The Sharks are taken on an emotional journey with a personal stylist from Santa Monica, CA as she passionately explains why she started her modern day slip business. Also, a man from Folcroft, PA believes his scrubbing tool will make everyday cleaning easier; a pet-loving couple from Denver, CO pitch their dog-friendly frozen yogurt; and two men from Camas, WA ride into the Tank ready to pitch their hands-free, electric unicycle. In a follow up segment, Mark & Hanna Lim from Pasadena, CA give an update on their "Lollacup" drinking cup, which Robert Herjavec and Mark Cuban invested in during Season 3.

Seth MacFarlane comes to the Tank to support his friend and horseback riding teacher from Sylmar, CA, who claims he has built a better fly trap. A mother from Walnut Creek, CA found inspiration when her little girl burnt her bottom on a hot swing, motivating mom to create a multi-functional child cover that can serve as a seat protector, car shade and more.
Also, Lori and Daymond find the idea of a unique food storage container worth sinking their teeth into, and fight each other for a piece of it, much to the delight of the San Francisco, CA based entrepreneur. In a follow-up segment, Barbara Lampugnale from West Hartford, CT gives an update on NailPak, an all-in-one manicure system which Lori invested in during Season 3.

A young entrepreneur from Burbank, CA shows how his motorized vehicle suit can take you from walking to driving in an instant. Emmy Award-winning comedy writer Bruce Vilanch demonstrates how a virtual classroom designed by a Key West, FL entrepreneur can teach technology to Baby Boomers. Also, two grandmothers from Yelm, CA hope to make a sweet deal with their sugar free candy chips. And a man from San Francisco, CA tells the real estate-savvy Sharks how his search engine can find homes for sale that will provide high returns. In a follow up segment, Jeffrey Cohen gives an update on his Voyage-Air foldable guitar, a business the Sharks turned down in Season 1 - but he later returned to the Tank and made a deal with Kevin O'Leary.

The Sharks salute a Marine Corps officer from Annapolis, MD who is asking them to invest in an energy and nutritional supplement designed and tested by active duty military personnel. A former fashion publicist from Brooklyn, NY pitches her online boutique offering a new way to shop for bridal wear. A sea captain and his first mate from Long Beach, CA hope the Sharks will come aboard and invest in their wine tasting cruises. In a follow-up segment, Aldo Orta, an artist originally from Mexico City (now living in Chicago) gives an update on his eponymous jewelry collection which Barbara Corcoran and Kevin Harrington invested in during Season 2.

The Sharks start a feeding frenzy for a chance to go into the residential lock business with a man from Orlando, FL who invented a way to incorporate the common key into a mobile phone. Two fitness trainers from Medina, OH hope to convince the Sharks their home gym is better since it provides nitrogen gas-pressured resistance. A young man from Trophy Club, TX asks the Sharks to invest in his age-defying products that were inspired by his older girlfriend. A father from Charlotte, NC designed a 100% recycled sneaker and hopes to get a business deal that he can eventually pass on to his two young sons. Also, a follow-up on Daymond and Mark's Season 3 investment with Alashe Nelson from Miami, FL and his EZ VIP website - where you can buy VIP treatment at nightclubs and special events. Daymond introduces Alashe to Pit Bull, the international superstar who will endorse the business.

A man from Torrance, CA gets the Sharks in the holiday spirit with his rent-a-live Christmas tree service, which hires war veterans to maintain and deliver the trees, creating approximately 200 jobs during the holiday season. An enthusiastic woman from East Hampton, NY asks the Sharks to invest in her fudge that is gluten-free, but not glutton free. The Sharks tell two college students from Santa Monica, CA studying business that they may have a lot to learn when it comes to their fashion accessory that holds a cell phone on your leg. Also, two longtime friends and moms from Los Angeles believe their kids' indoor/outdoor play and party space is a perfect franchise opportunity. Singer-songwriter John Rich surprises entrepreneur Travis Perry from Dothan, AL, during an update for Chord Buddy, a training tool for beginning guitar students which Robert Herjavec invested in during Season 3.

A pair of chemical engineers demonstrate a capsule that can keep liquids hot for a longer period of time; a mom has an idea for cleaning stuffed toys; two Oakland men try to drum up interest in their garden-wall system; and a married couple dish out ice cream made with liquid nitrogen. Also: an update on a jewelry business from Season 3.

A self-proclaimed "granola" couple from Boulder, CO, hope the Sharks will run with their sandals for barefoot runners; and a charming rabbi from St. Paul, MN, has the sharks listening to his business idea for a power-free magnetic sound enhancer for the iPad. A Miami, FL homemaker gets emotional when she tries to convince the Sharks to invest in her made-in-America multi-purpose bib; and a traveling salesman and father of seven from Hollywood, CA, pitches his website to help create personalized soundtracks for children. In a follow up segment, Jim Tselikis and Sabin Lomac give an update on "Cousins Lobster," their LA-based fresh Maine lobster food roll truck company which Barbara invested in during Season 4.

The successful entrepreneur and creator of the CitiKitty cat toilet training system (Rebecca Rescate from Florence, NJ) returns with a new business idea combining the comfort of a pillow with a favorite piece of clothing. Also, two men from Austin, TX are willing to give the Sharks a 100% stake in their hand-held cooler business; a woman from North Hollywood, CA believes the Sharks will make a lot of green with her environmentally friendly dry cleaning bag; and two recent college graduates and baseball players from San Francisco, CA hope the Sharks bite on their idea for an alternative to chewing tobacco made from coffee grounds. From Season 1, entrepreneur Tiffany Krummins, creator of Ava the Elephant medicine dispenser, gives an update on her latest product, a thermometer sticker for children.

Kevin O'Leary makes a million dollar offer. Also, six "kidpreneur" inventors aged 12 to 18 from Londonderry, NH, hope to make a deal with their unsafe driving detector device so they can help save lives; a woman from Marina del Rey, CA pitches a mini-muffin that provides a new twist on the campfire s'mores; two brothers from Austin, TX hope the Sharks will want to roll with them and invest in their sushi restaurants, where the customer becomes the chef; and a woman from New York City wants to bring some sanity into the world with her online chat therapy business. Donny McCall from Sparta, NC, who failed to get a deal in Season 3, gives an update on Invis-A-Rack, a cargo management system for pickup trucks.

hree brothers from Boise, ID hope the Sharks can envision investing in their family business - one-of-a-kind eyewear made from sustainable wood; and a man from Madison, MS, enters into muddy waters when he asks the Sharks to invest in his camouflage clothing line designed for duck hunters. Also, sorority sisters from Dallas, TX hope the Sharks find a perfect fit for their premium denim line, and a pair of Southern Belles from Loganville, GA, try to charm the Sharks into investing in their high end bedding for little girls. Pat McCarthy from St. Charles, IL, who declined an offer from Daymond in Season 3, gives an update on Liquid Money, a line of his & her fragrances inspired by the scent of money.

Three men from Pawtucket, RI hope the Sharks will go nuts over their fortified, sugar-free nut butters; a mom from Pacific Grove, CA says her stylish acupressure wrist band will provide relief for people with nausea; two men from Westminster, CO want the Sharks to jump onboard their at-home tattoo removal device; and a woman from Magnolia, AR brings the Sharks her prototype for a women's shoe design where a stiletto heel can be switched out for a wedge. Also, an update on Mark Hartwick & Sarah Ponn from Bedford, NH and Surfset, their surf-inspired fitness equipment and program which Mark Cuban invested in earlier this season.

A former rodeo rider turned physical fitness trainer from Mead, CO pitches his workout program that teaches people how to exercise in their heart rate zone; a couple from Narberth, PA want to turn their traveling, custom fitted disco van that's used to throw dance parties for kids into a big money operation; and two friends from Greensburg, PA hope the Sharks will agree with their claim that their cell phone case design is indeed damage proof. In a follow up segment, Raven Thomas from Gilbert, AZ gives an update on the Painted Pretzel, which Mark Cuban invested in during Season 3.

A pair of charismatic entrepreneurs from Los Angeles swim around offers for their device that prevents objects from slipping through what Mark Cuban calls the "carmuter triangle" - that gap between the car seat and center console. Also, a fresh-faced 18-year-old from Pittsburgh, PA sweet talks the Sharks to invest in her natural skincare line of sugar scrubs, an idea she came up with at the age of 11; a man from Attleboro, MA hopes to wrap up a deal with his shrink wrap gift bags; and two men from Plymouth, MN present a tasty solution that could stem a looming ecological problem caused by the predator-free Lionfish. Maria Curcio and Veronica Perlongo from Freehold, NJ, who made an unprecedented deal with all five Sharks in Season 4, give an update on BuggyBeds, a product that provides around-the-clock bedbug detection.

A third-generation farmer and cattleman from Peoria, IL hopes the Sharks will start a feeding frenzy over his gourmet meat business. Two men from Las Vegas believe their cooler with interior LED lighting will help people find what they're looking for. A chemical engineer from New Orleans, LA hopes his full body spandex suit creation is the next social phenomenon; and a man from San Diego, CA asks the Sharks to drink once-dirty water made clean from his advanced filtered water bottle. In a follow up segment, Juliet Boydstun & Lucinda Lent give an update on The Coop, a play and party space for kids which Barbara Corcoran invested in.

Two women from Alexandria, VA, inspired by their experiences as West Point cadets and U.S. army officers, present their fashion forward jewelry line; a man from Aurora, CO believes he's perfected the traditional English scone; a self-described "geek" from Lynnwood, WA hopes a deal for his custom, made-to-order furniture will make him cool; and a man from New York aims to help people with his door-to-door luggage pick up service. Also, an update on Aaron Krause from Folcroft, PA and the versatile Scrub Daddy cleaning tool, which Lori Greiner invested in during Season 4

Two men from Orlando, FL try to hook the Sharks into a deal with their fishing bobber made from a real shotgun shell. A mother and daughter team from Cohasset, MA offer the Sharks a sweet opportunity to invest in their homemade cupcakes-in-a-jar business. Also, a man from Cleveland, OH hopes to generate enough interest with the Sharks in his product which turns energy into usable electricity every time you take a step, and a natural-born salesman from Provo, UT presents a new twist on a common accessory - a belt with no holes. Plus, an update on Billy Blanks Jr. from Canoga Park, CA and his Dance with Me fitness-based dance program, who made a deal with Mark Cuban and Daymond John in Season 3.

A single mom and former truck driver from Inglewood, CA asks the Sharks to invest in her frozen, concentrated gumbo brick, made from her grandmother's secret family recipe; a man from Hawley, PA shocks the Sharks with his bird feeder that gives unwanted squirrels a harmless static shock; two friends from Scottsdale, AZ want to make your next trip to the coffee shop a thing of the past with their artisan coffee subscription business; and a former executive who moved from Manhattan, NY to Williston, VT, now manufactures kitchen and houseware items made from wood grown in Vermont. Also, an update on Becky App & Abby Jordan, who failed to make a deal with the Sharks during Season 4 with their ECreamery ice cream business

Two women from Alexandria, VA, inspired by their experiences as West Point cadets and U.S. army officers, present their fashion forward jewelry line; a man from Aurora, CO believes he's perfected the traditional English scone; a self-described "geek" from Lynnwood, WA hopes a deal for his custom, made-to-order furniture will make him cool; and a man from New York aims to help people with his door-to-door luggage pick up service. Also, an update on Aaron Krause from Folcroft, PA and the versatile Scrub Daddy cleaning tool, which Lori Greiner invested in during Season 4

An app that provides international travelers with access to live translators; all-natural dog treats; a dating website designed to attract quality singles; gourmet grilled cheese and tomato sandwiches; Dr. Heinz Doofenshmirtz ("Phineas and Ferb").