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The murders of two young Phoenix, Ariz., women killed 10 months apart in 1992 and 1993 go unsolved for more than two decades until new technology allows police to track a person of interest in an unusual way.

Besties battle: Christie and Larisa challenge Brittany and Marcia.

Sibs Cheryl and Rose take on co-workers John and Cole.

When Chuck and Carol decide to renew their vows, Mike plans to take his officiating to the next level.

After Mandy and Kyle combine their finances, they begin to quarrel.

Claire prepares to make the Dunphy house spooky for Halloween; Cameron does not like the holiday because of a traumatic childhood experience; Jay and Manny tease Gloria about her accent.

Sheldon and Amy are devastated after learning from a Russian paper that Super Asymmetry has already been discovered and disproved; Bernadette wants to beat Howard in a popular video game.

Sheldon and Missy learn about Georgie's pregnancy, and the whole family promises to keep it a secret.

An embarrassing secret of Wolowitz's is revealed; Raj and Sheldon get into a war at work.

President Donald Trump addresses the nation; the Democratic response.

Port Wenn goes into high alert when a corpse is found in the town's bog and Martin's autopsy reveals that he was murdered; Martin's solo investigation trek leads him to a startling discovery about himself.

Leonard tells Penny about how he met Sheldon and what happened to the elevator.

When Chuck and Carol decide to renew their vows, Mike plans to take his officiating to the next level.

Kramer's numbing experience at the dentist wins him a spot in a charity concert; George is accused of stealing.

George Sr. and Georgie go camping with Meemaw's new boyfriend, but things get complicated when her ex-boyfriend tags along; Sheldon and Missy invent a game.

Dave is eager to take on a bigger role in the community and prove himself to Calvin; Calvin's reaction makes it clear that, while the relationship between the two families has grown, the friendship between Calvin and Dave needs more time.

When a curmudgeonly resident who has few fans in the community passes away, the Butlers step up to host a memorial; Calvin learns something unexpected about himself.

JTV is making room for new product with clearance priced items during a Warehouse Sale.

JTV is making room for new product with clearance priced items during a Warehouse Sale.

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NewsNation's live national morning newscast.

NewsNation's live national morning newscast.

NewsNation's live national morning newscast.

NewsNation's live national morning newscast.

NewsNation's live national morning newscast.

A daughter accuses her mother of causing her emotional distress; a landlord argues that the included electricity provision in lease doesn't cover charging a car.

"Car Catastrophe.".

A woman sues her former friend for repayment of a loan; he says she came to his job looking for him and assaulted his co-worker.

A 33-year-old woman sues her childhood friend for $2,500 over a car sale after her husband passed away; the defendant is linked to a gas-and-go theft caught on camera.

A retired machinist sues his ex-tenant for losses in a model plane venture, alleging a promised $35,000 profit on a $3,500 investment; the defendant cites challenges in selling planes.

Crimes from across the country that have been captured by ordinary people on their smartphones; stories of victims, witnesses, law enforcement and the videographers themselves.

Crimes from across the country that have been captured by ordinary people on their smartphones; stories of victims, witnesses, law enforcement and the videographers themselves.

An investigation into the world of murder-for-hire on the dark web exposes an international criminal organization headed by a self-described murder mastermind who goes by the name Yura.

Couple Kevin and Loren oppose BFFsTiara and Ava.

David and Monica go up against siblings Bryson and Bindi.

Vanessa "helps" Mandy and Kyle look for their first apartment; Mike is thrilled when Ryan's good business decisions have him unknowingly embracing capitalism.

As Boyd's sense of adventure grows, Mike and Kristen have a different opinion on how much space they should give him; when Mandy and Kyle move into their apartment, they find Ryan isn't a fun landlord.

Manny experiences a minicrisis over getting older; Phil and Claire engage in a car race on the way to a restaurant; Mitch and Cam go to the mall to pick up a gift for Manny's birthday.

Cameron's mother (Celia Weston) makes Mitchell uncomfortable; Haley breaks up with Dylan.

As the church congregation gossips about Georgie, Missy stands up for her brother; Sheldon is distracted by the family drama.

Leonard realizes he is the only one in his group without a girlfriend; Sheldon wants to get rid of his girlfriend.

Featuring fan-favorite songs from the iconic girl group; special guest panelist Taraji P. Henson.

Contestants bid on how much punishment they can take; no one is safe from elimination in a truly sick pie-eating contest.

A VHS tape from Sheldon's past inspires him not to give up; Bernadette turns into a pageant mom when she tries to help Wolowitz with his Magic Castle audition.

Raj and Howard set up an online dating profile for Sheldon and find the perfect woman.

Vanessa "helps" Mandy and Kyle look for their first apartment; Mike is thrilled when Ryan's good business decisions have him unknowingly embracing capitalism.

Jerry is forced to flee his apartment when it must be bug-bombed for fleas, which prevents Elaine from getting a manuscript she needs.

Dave and Tina discover a common bond when they attend a concert together; Gemma seeks the Butlers' help when an unwelcome visitor takes up residence in the Johnson home.

The Butlers and the Johnsons unite when a member of their community falls prey to racial injustice.

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NewsNation's live national morning newscast.

NewsNation's live national morning newscast.

NewsNation's live national morning newscast.

NewsNation's live national morning newscast.

NewsNation's live national morning newscast.

A dispute over a phone purchased before a breakup; neighbors argue over the cost of a privacy fence built to block views of backyard nudity.

"Clash Over Missing Glasses.".

The defendant says the plaintiff threatened him with a fan after she saw a text from another woman.

A graduation roadtrip spirals into a drug-fueled crime spree, leading to a legal battle between two teenage girls; stories involve, marijuana possession, an intentional deer collision, and a two-hour high-speed police chase across four counties.

A woman takes her former friend and contractor to court, asserting that the deck he revamped was not just incomplete but posed a safety risk to her 16-month-old baby; the contractor defends his work, citing budget constraints.

Crimes from across the country that have been captured by ordinary people on their smartphones; stories of victims, witnesses, law enforcement and the videographers themselves.

Crimes from across the country that have been captured by ordinary people on their smartphones; stories of victims, witnesses, law enforcement and the videographers themselves.

An investigation into the world of murder-for-hire on the dark web exposes an international criminal organization headed by a self-described murder mastermind who goes by the name Yura.

Aunt and niece Cynthia and Tyler battle Abby and Isaak.

It's family time, with mom and daughter team Maria and Sarah taking on in-laws Joe and Jonathan.

Mike begrudgingly invites Ryan to his weekly poker game but immediately regrets it when Ryan gets the guys to open up about their feelings.

When Ed and Bonnie start spending more time together, Vanessa doesn't want Mike to interfere with their relationship; Mandy and Kyle eavesdrop on Kristin and Ryan through their new home security system.

Luke and Manny have their first school dance; Jay and Phil take Luke and Manny on a mall run that becomes quite stressful; Mitch and Cam learn that Lily is biting other kids on the playground.

Claire intends to stop a car that speeds through the neighborhood; Phil deals with a difficult client; Jay teaches Manny to ride a bike; Mitchell and Cameron meet a charming neighbor.

Sheldon struggles to cope with his first signs of puberty; Mary and George Sr. both hunt for new jobs; Georgie and Meemaw take a business trip across the border.

Leonard keeps an affair a secret from Sheldon, Howard and Raj.

Three enormous fish descend on the platform and the chefs must work together slicing and filleting their catch of the day.

When Templeton is nominated for Animal Control officer of the year, Frank sets out to rescue 24 animals in 24 hours; Victoria steps in for Shred after he's bitten by a kitten; Templeton tries to sabotage Frank's mission.

Major Shah needs the weekend off to celebrate his anniversary with Celeste; Capt. Maggie makes an emotional hair choice.

Penny and Leonard organize a paintball game, which results in mayhem when Sheldon becomes jealous of Amy; Koothrappali catches Anu with her ex-boyfriend; Stuart doesn't want to move in with Denise.

Penny tags along on Sheldon's first date; Wolowitz finds a new use for a robotic arm.

Mike begrudgingly invites Ryan to his weekly poker game but immediately regrets it when Ryan gets the guys to open up about their feelings.

Jerry feels betrayed when his method of pleasing a woman is used on Elaine by a friend (Patrick Warburton).