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An abandoned oil well erupts and causes a massive sinkhole in downtown LA; Athena investigates a 30-year-old cold case involving a casino robbery; Buck fears his relationship with Taylor might be ending.

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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.

Parents sue a relative for revealing a secret to their child and not coughing up the money to fix the blunder; a wasp interferes with a marriage proposal.

"Website Design Disaster.".

A woman sues her former roommate for stolen property and says the defendant was passive-aggressive and verbally abusive; the defendant counter-sues for defamation of character.

A much-anticipated, all-girls trip between former classmates turns into mudslinging and a lawsuit over trip costs; the plaintiff claims her goodwill blessings to a friend were not meant to be taken literally.

A veteran makes several rookie mistakes when he purchases his first home and is sued for thousands by tenants that came with the property; a questionable inspection does little to back up his claims of property damage.

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.

Authorities try to determine whether a man's obsession with his wife led to his death.

Katie and Jim, a father-and-daughter team, challenge married couple Beth and Micah.

Besties Ann and Robin go up against newlyweds DJ and Allison.

When Mike gets NASCAR driver Tony Stewart and his racecar in the store, he realizes how much he misses the adrenaline rush he used to get from his adventures on the road; Vanessa thinks about how she used to take more chances before she was a mom.

When Mike's younger brother (Mike Rowe) and father (Robert Forster) visit, a sibling rivalry ensues; Eve, Mandy and Kristin try to help Bud find a girlfriend.

Gloria and Claire plan a Mother's Day hike with the kids; things becomes awkward when Phil catches Jay in a moment of weakness.

Phil and Claire shock the kids by switching parenting roles for a day; Jay gives advice to an entrepreneur about his dog-training business; Cameron has the flu, leaving Mitchell to decide what to do with their Lady Gaga tickets.

Sheldon and George Sr. have dinner with President Hagemeyer and a university benefactor; Georgie gives Missy some brotherly advice when Mary won't let her go to the school dance; Dale and June convince Meemaw to attend their son's wedding.

Wolowitz questions his engineering skills after he and Sheldon can't get a toy drone to fly; a canceled flight puts Leonard's plans in jeopardy; Raj sets his parents against one another after he's cut off financially.

For the first time ever, the stage belongs to 100 extraordinary women as they compete for $100,000.

Families who faced off on the survival show "Extracted" meet again for the chance to win $100,000.

Sheldon plans an authentic "Little House on the Prairie" dinner for Amy's birthday; Leonard receives a Christmas letter from his brother.

Amy finds out that Sheldon applied for a one-way mission to colonize Mars; a trip to the pet store leads to a fight; Leonard has a surprise for Penny; Raj is busted while snooping in Emily's apartment.

Elaine and Jerry arrange a date for George with one of her unattached friends (Maggie Jakobson).

Jerry is challenged to a race by a former high-school classmate; Kramer fights for his rights as a store Santa.