When Dalia receives a new car after PSAT results are released, Tessa becomes obsessed with finding out Dalia's score Jill and Noah ask Mr. Wolfe to tutor their baby.
When a rape victim is arrested for murder in Suffolk County, Detective Benson questions the case and finds enough evidence for District Attorney Barba to charge a different suspect in Manhattan.
After having been in a coma since the night she attempted to elope, Harriet Farmer wakes up. A killer then murders members of a local chess club. John Barnaby and the team investigate whether the attack which left Harriet for dead a year ago could be linked to moves on a chess board and atempt to find out what happened to her boyfriend Finn.
Examining evidence about Neanderthals that sheds light on the hominids, which died off some 30,000 years ago. Included: geneticist Svante Pääbo's 2010 reconstruction of the Neanderthal genome, which posits that modern humans and Neanderthals interbred at some point in the distant past.
Rayna and Juliette are locked for their tour. When Rayna suggests taking her girls with her, she finds that Lamar's not above holding her hostage with some long forgotten family secrets. To everyone's surprise Juliette and Sean have eloped, though not everyone is celebrating. Deacon reconnects with a former flame, and Avery follows the advice of a new music producer that puts more space between him, the band and Scarlett.
When Judi's college boyfriend shows up to rekindle their romance years after he left her, Fran pushes Judi to pursue it.
Drugs, humans, weapons and money can be hidden anywhere by anyone at any time, and nobody knows that better than the law enforcement officers who work on or near the border. Laredo narcotics officers raid a residence in a school zone after a confidential informant buys crack cocaine direct from a drug dealer's house.
When 13-year-old Jessie Cooper meets 34-year-old Nick Hamilton, she thinks he's just a nice next-door neighbor. But when he starts writing Jessie love letters, her mother discovers they have a serious problem on their hands. Nick is a registered sex offender with a penchant for adolescent girls and he is relentlessly pursuing Jessie.
Joy's mom meets her new family members at Wilbur's christening. To avoid friction with her mom, Joy makes her son Owen pretend to be someone else. Elka touches up a church fresco. Victoria's incessant Emmet talk annoys Melanie.
Bobby and Krista attempt to rescue a group of stranded tourists from a raging forest fire, but they need help from the rest of the Arctic Air crew if they're going to make it out alive.
Jay and the family plan to celebrate New Year's together at a hotel in Palm Springs, but the hotel doesn't meet their expectations Alex and Haley are faced with challenges as they try to watch the kids back at home.
Severide finally addresses Chief Boden about his injury and makes some important personal decisions about his future. Meanwhile, Casey struggles with family matters and Dawson takes matters into her own hands when she discovers a young girl who is the sole survivor at the scene of a rescue call.
In South Korea, Cory and Justin meet the ship delivering Buffalo's water bomber plane to new buyers there. But the boys are frustrated by the buyers' poor planning. Tempers flare when they try to get the plane off the ship and delivered to its final destination. After taking part in a military paratrooper jump, Mikey brings in fashion model Kate Eaton to join his team for the Frostbite snowshoe marathon.
When Frankie and Mike dedicate a day to each of their children, Axl takes them to a paintball range, Sue has them do 17 separate activities and Brick wants to go to a sci-fi convention.
Grace tells Kit devastating news about the aliens' experiments on Alma Dr. Thredson receives an unexpected visitor the Monsignor goes to extreme lengths to silence Jude.
Jarrett sinks to a new low in his negotiating skills when he fails to deliver a trailer-load of surfboards on time and the customer demands a discount. Marc takes on a Monster Truck only to find there are no "travel wheels," making the load oversized.
Chris and Robbie win a creepy load of horror memorabilia but the real scare comes when the cargo is twice as big as they agreed on. Roy thinks he has plenty of time to haul a trailer full of rare film prints to Austin in time for a movie screening.