In an attempt to build a case against ClearDawn labs for the wrongful apprehension of children in Millwood, Joanna reluctantly agrees to try to put together a class-action lawsuit. Billy gets a tip from his father about a potential break in the case.

Danyelle Long-Hyland / Ranson, West Virginia, Scientist; Josh Gruenberg / Rochester, New York, Software Engineer; Jamie Wylie / North Hollywood, California, Writer Content Producer.

Josh Gates investigates the most mysterious airline disaster in American history, searching for why Northwest Flight 2501 vanished taking the lives of all 58 people on-board. Later, Josh and his team examine sightings of the Mothman across the Midwest.

Twenty previous winners of SURVIVOR begin their battle for $2 million, the largest cash prize in reality show history, on the special two-hour 40th season premiere of SURVIVOR: WINNERS AT WAR.

Discover the wildlife of the Sunshine State and how experts are battling threats to its ecosystems.

Dr. Manning and Dr. Marcel disagree over an abusive husband. Dr. Halstead struggles with ethics and his decision to work at the safe injection site. Dr. Charles and Elsa reveal a misdiagnosis that may change a family's life.

match #1 -  Roderick Strong vs. Bronson Reed

match #2 -  Candice Lerae vs. Dakota Kai

match #3 - Johnny Gargano vs. Cameron Gimes

match #4 - Lio Rush vs. Angel Garza ( #1 contenders match for cruiserweight title)

match #5 - Bianca Belair vs. Santana Garrett

match #6 - Adam Cole vs. Kushida

Worried about what the future may hold for him after high school, Archie seeks advice from an unlikely source -- Hiram Lodge. Meanwhile, Veronica begins to spiral after learning some devastating news about someone close to her. Finally, accusations made against Jughead leaves his future at Stonewall Prep hanging in the balance.

When Erica and Barry receive the same grade in class, Erica knows something's up and finds out something very interesting about her brother. Meanwhile, Beverly gets involved to help Adam win his crush as a date for the upcoming Cupid Couples' Skate at William Penn Academy.

Travis' mysterious disappearance raises suspicions within the Committee and in the Howard house.

Officers respond to a break-in at a local police lodge with K-9; a man pulls out a gun while fleeing the police; deputies in Michigan pursue an arson suspect.

In honor of Valentine's Day, Principal Glascott throws a "dating game" based on the show "Singled Out" where Lainey uses the opportunity to figure out her feelings. Meanwhile, Felicia is having body-image issues and Coach Mellor throws a workout camp to help her self-esteem.

Authorities in Wisconsin respond to a multiple car pile-up; a traffic stop leads deputies on a low-speed chase; a Texas game warden assists two tangled bucks.

Lucia decides to host a fundraiser at the restaurant and finds her voice along the way. Emilio faces an identity crisis. Beto goes behind Ella's back. Val struggles to maintain her false identity but is outed to a member of the family.

A series of mysterious gas leaks has members of Firehouse 51 puzzled and spread thin. Brett's conflicted when her birth mother gets serious about tracking her down. Severide misunderstands his role as Cruz's best man. Mouch bites off more than he can chew.

In one last family trip, they head to Paris so Jay can accept a lifetime achievement award for his work in the closet industry. However, his old nemesis, Earl Chambers, finds a way to haunt him. Meanwhile, Claire has a secret rendezvous in one of the most romantic cities in the world, and Cam's lifelong dream of performing as Fizbo on the streets of Paris is about to become a reality.

Police discover a car belonging to 19-year-old, Sarah Stern abandoned on a bridge, the keys still in the ignition, but she was nowhere to be found. Police initially suspected suicide, but why then would she withdraw thousands of dollars in cash?

Mike throws Michael a curveball that has major consequences for their business partnership. The rebuild of the River House continues as they battle muck, rain and snow, and after many stressful months, the property is ready to be revealed.

Kady punches a dude; Margo misses cocaine.

Jessica Chobot and Phil Torres dive into the legend of Mothman by searching for clues in a long-sealed bunker and a top-secret Air Force base.
 

Dogs have long been dependable companions by our sides. But it wasn't always that way, and a look at their closest living relative, the wolf, makes it clear why. Research into dog domestication and intelligence offers clues into what the human-dog relationship is all about. And analyzing dogs' brain activity and genes may even help answer the question of whether dogs are in it for the food—or if they really love us.

A man encounters a terrifying shadow creature in his bedroom, an unidentified light is spotted above Fairbanks, Alaska, and a Detroit brewery is visited by an angelic entity.

Each duo must create a space-themed build; the creations are smashed in slow motion.

The world's highest bridge, China's Beipanjiang First Bridge, impossibly spans an 1,854-foot chasm known as the Crack in the Earth, and to build this engineering marvel, experts use cutting-edge construction technology that can conquer the deadly cliffs of this rugged environment.

A couple looked at over 50 houses before finding "the one", and they want to maximize every square inch to make it their forever home. Drew and Jonathan tackle the entire main floor and deck to give them their dream home, inside and out.

When the battered body of Bianca Rainer, mother of two young girls, is found in rural Arkansas, the police have just one unusual clue, a puzzle piece found stuck to her body, but they know if they find the missing puzzle, they will find her murderer.

Trey Songz and Tamar Braxton join Martha and Snoop for a Valentine's Day dinner showdown of ribeye versus steak, and William Shatner guest judges.

Most married couples consider their kids their babies, but these couples also consider their restaurants their babies. Guy Fieri puts their culinary skills -- and relationships -- to the test with a pair of challenges that they must work together to overcome. In round one, Guy sends one spouse shopping, leaving the other behind with a list of key date night dinner ingredients to relay to their partner over the phone. Then, the pair that makes a winning version of their restaurant's best dish with a limited number of ingredients goes on a Flavortown shopping spree worth up to $20,000.

It's Valentine's Day! Will and Angie have reunited to help run the student-parent dinner at Hilltop, where the kids are serving up questionable meals to paying customers. Meanwhile, Big Red is back in town and Douglas is worried about how Poppy will react.

A homeless man's murder leads Intelligence to a criminal who has evaded capture for years. Rojas has a troubling experience with a young mentally ill man.

Prentiss and J.J. are faced with important decisions to make about their futures as the BAU travels to Beaumont, Texas to investigate a series of murdered businessmen.

Margo and Eliot have a bad day.

Dex is hired to investigate a bride's fiancé after suspicions arise regarding the motives behind the hurried nuptials. Dex asks Hoffman for help with the case and discovers there's more to this couple than meets the eye. Meanwhile, Hoffman goes head-to-head with his father when he learns that he will be representing a suspect in Hoffman's case. Back at The Bad Alibi, Tookie and Ansel propose a new business idea to a reluctant Grey.