will see some more accumulating snow. very powerful storm shoves in stick around through midweek next week. a bad crash on m-l-k sent one person to the hospital and had traffic backed up for hours this morning. action news reporter marissa kynaston was on scene.. and has the latest on what happened. all of a sudden we heard a big impact investigators said it was one of the worst accidents they had seen in a while. sot a lot of screeching sot then just silence nat silence the impact-- forced car parts to scatter all across the road-- and other parts-- to fly through the air. sot just knowing that somebody was going that fast and had that much affect, from pieces of vehicle going everywhere is pretty scary the accident happened about 3:30 in the morning. investigators say two vehicles ran into each other at the martin luther king and gowan intersection. one driver was sent to the hospital. police say he wasnt wearing a seatbelt. the other-- who police believe caused the accident-- was taken into custody. at this point in the

speed may have been a factor. the limit on the road is 35 mph-- but people who live nearby say-- drivers go faster. sot they always drive faster, it's an open road, especially at that time marissa tag now to the investigation into the terror couple in san bernardino. the fbi expanding its search -- authorities now looking in a lake for clues. abc's matt gutman is in san bernardino this moring - for the first time - we're learning the likely whereabouts of that terorrist couple in the hours after they fled this shattered conference room? and before the roadside shootout which left them dead.. slug: tvu 2 fbi san bernardino lake search presser abc uni 18:11:37 gutman: is it possible they were here? slug: aptn hd 5538 6p.02 18:12:05 fbi bowdich it's possible they were at this data on it. divers criss crossing the murky water to salvage even the federal authorities now saying farook and his neighbor?

the military-style rifles used in last week's massacre?allegedly began planning but later abandoned a terror plot in 2012. in gutman wn piece 18;16;12;19 senator risch there had been some arrests immediately adjacent to that right in their area rethink it those arrests? also in 2012. four men from riverside california - the same town farook and marquez lived in. this morning.. marquez still in f- b-i custody? but not under arrest. his mother talking to reporters for the first time? telling us she's heartbroken? and shocked - to learn her son isn't who she thought he was. family members never knew the former punk rocker converted to islam or that he'd married a chechan woman who had just emigrated to the us? his wife - one of two russian sisters -- the other married to farouk's

as a ne'erdowell and party boy? but with a good soul.. now to a runaway train in boston. it left the station with no one at the controls -- barreled through four stations for nearly ten minutes -- before it was finally stopped. the operator has now been placed on leave. this as investigators try to figure out what caused his packed commuter train to drive off without him. authorities say just after 6 am yesterday david vasquez got off his train to deal with a signaling issue... seconds later?the train took off... grazing him as it left station. others tried to bust into the operator's booth. transit crews meanwhile scrambled to clear other trains off the track... then cut power to the third rail. fortunately, nobody was hurt. police in north carolina are searching for a woman accused of slapping a seven-year-old while playing laser tag. authorities say it happened saturday at the adventure landing entertainment center in raleigh, north carolina. the mother of the victim says

the woman came up and slapped her. she says the woman also shoved her nine-year-old daughter. the woman left the business before a security guard could detain her. people across geneva, switzerland are vowing to carry on their normal daily activities.. even as authorities raised the security alert level. it happened after geneva police announced they were actively searching for suspects in connection with the paris terror attacks last month. much of europe has remained on heightened alert in the weeks since then. geneva police aren't saying how many people are being sought. in paris.. police are looking for a suspect responsible for a big jewelry heist. according to investigators.. the gunman entered the shop.. not far from an area under tight security.. demanded merchandise.. and took off. no one was hurt.. but the thief got away with a number of precious stones worth about 1-million dollars. preparations are underway for a verdict in the freddie gray trial... police are worried that the racially sensitive case may spark a protest. the trial of baltimore police officer william porter is

of next week. police are preparing for the worst -- setting up barricades in case there are riots after the verdict comes down. though no one knows which way a verdict will go city officials aren't taking chances. ((brandon scott / baltimore city councilman ) "we have protests every week almost every day in this city, and we don't have any issues and that's what we expect after this verdict." many are pleading for peace... hoping the city will not see another episode like the april unrest. you may remember, gray, who's african american, died after not receiving medical attention in the back of a police van. good news for anyone who loves sweets in today's 'now trending' report. we'll tell you how tomorrow's date can earn you a free dozen unbelievable basketball shot that looks more like something out of a movie. bryan. ((bryan)) a look at some of today's top

hey, is that it? i think that's it. this is krystal, and her dream is to be a roller derby girl. we love krystal! we love krystal! oh my god it's jj watt! oh my god!

if you have a sweet tooth... you'll like this first story... fans of krispy kreme donuts are getting ready to double their orders tomorrow. saturday is december 12th, or 12-12. so any customer who buy a dozen donuts at krispy kreme on saturday will get 12-more glazed donuts free. the giveaway is part of the company's "day of the dozens" promotion, and is now in its third year. if you want to get in on the deal, you can get the coupon through the krispy kreme app on your smartphone. or you can bring a printed copy to the store. gop presidential candidate donald trump says he's a big fan of actor harrison ford.. but the feelings may not be mutual. trump told the new york times he loved ford's portrayal of a u-s president in the movie "air force one"..

for america" in that movie. but.. during an interview for australian t-v.. ford reminded trum it was just a movie.. then said 'it's not like this in real life donald, but how would you know?' take a look at this impressive shot! a minnesota high school basketball player throws a last minute hail mary... and it makes it right into the hoop! the team was down by two points, with less than two seconds left in the game... but that full court shot snagged them a victory! and as you can see the crowd just went wild!! for more stories trending right now.. go to ktnv.com. and we want to hear your thoughts. sound off on any trending news by joining us on twitter. our handle is @ktnv use #nowtrending. anchors adlib and toss to bryan a wind advisory is still in effect for the las vegas valley until 6 this morning but gusty winds will persist throughout most of the day.

temperatures very warm yesterday, mccarran hit 70 around 7:00 last evening and those same winds kept the temperatures very warm overnight. that will bring las vegas into an odd situation where the warmest temperatures came in around midnight to 1am and the low will likely be 11pm to midnight tonight. that's because some very cold air will continue to filter into the valley as the cold moisture and better dynamics to force some rain showers to form over las vegas. most of the showers will stay in the mountains but a few will push into the valley and give a hundredth or two of rain. 2-4 inches of snow is possible in the mountains up above 5,000 feet so mt. charleston and the ski park will see some more accumulating snow.

with more sunshine around and highs near 60 but another very powerful storm shoves in monday with a decent shot for more rain showers, gusty winds and highs in the 40s. those chilly temperatures will stick around through midweek next week.

new information about the dangers of concussions.. but this time..

necessarily bad news. and remember, you can watch action news anytime.. anywhere. we're streaming our newscasts at ktnv.com so you can stay informed on any computer .. smartphone.. or tablet. we'll be right back. in today's health report..

related concussions.. with up to 3.8 million reported each year.

breakthrough way to quickly diagnose them -- abc's paula faris is here with that. nats - football helmet hit this morning - a potential breakthrough for diagnosing sports- related concussions? especially for so many parents concerned about their children suiting up? nats concussion movie the head injury even the subject of will smith's major motion picture "concussion?" [gfx] the c-d-c reports nearly 250,000 kids under age 19 were treated in emergency rooms across america for sports-related injuries resulting in a concussion or traumatic brain injury diagnosis in 2009. http://www.c dc.gov/traumaticbraininjury/ge tthefacts.html sot - er doctor 21;35;47;38 our brains are developing up to 18 or the early 20s - those injuries are ones that can lead to degenerative changes. 21;23;45;44 while there's a risk of concussion or brain injury it's important that they engage in sports and be healthy now - medical company - quanterix (quan-tear-ix) says they're developing technology that will change the game? sot pop- quanterix ceo skype 22;08;42 we are applying

testing. [gfx] the company developing machines that will identify a concussion in less than a hour using a simple blood test? identifying proteins that show brain trauma... sot - quanterix ceo skype 22;19;03 ?so a finger prick could tell you the answer within 20 minutes of whether or not that athlete has experienced a concussion. [gfx] quanterix's research backed by the nfl after winning funding from the league's "head health challenge?" sot - quanterix ceo skype 22;11;41 having an objective test could change the culture of the game the company hopes to have the tests ready as soon as next year?and doctors say this technology could make a great impact on sports sidelines? sot - er doctor 21;26;59;56 this test is very promising - it requires more validity and trials to make sure it's actually going to be useful in the clinical setting as well as the sideline still ahead... a final look at your forecast! and a look at tonight's abc prime time lineup on channel

8- last mon standing 8:30- dr. ken 9- shark tank 10- 20/20 11- action news before judge judy.. a look at some of the top

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another serious accident on our valley roads today.. affecting morning commuters and critically injuring one driver. police tell us 2 cars collided on martin luther king boulevard... near cheyenne... and say speed was a factor. one man was ejected from his car and is in critical condition at u-m-c. and despite his controversial comments about keeping muslims out of the u-s... donald trump is leading the g-o-p polls. he's ahead in new hampshire... followed by chris christie, who's gaining ground. investigators are again searching a lake in san bernardino for possible evidence from last week's deadly terror attack that left 14 dead. authorities believe it was the last place the husband and wife shooters went before the attack.. possibly to dump evidence.

if anything has been found. and a grinch is stealing holiday spirit in the valley.. expensive christmas lights were taken from a home in southern highlands... and the people responsible were caught on surveillance camera... but haven't been found yet. coming up on action news.. live at 5.. we'll have an update on the protesters who disrupted services in several catholic churches around las vegas.. and what metro is doing about it. and.. a bizzare robbery in the u-k. police in london are now after a guy who ripped off a grocery store and made his getaway on a hoverboard.. on action news live at 5. and then on action news at 6... in the wake of several mass shootings across the country... gun sales are skyrocketing as people are bearing arms to defend themselves. we'll take you inside one valley gun store where the owner says the demand is so high... they're turning people away! a wind advisory is still in effect for the las vegas valley until 6 this morning but gusty winds will persist throughout most of the day.

that will bring las vegas into an odd situation where the warmest temperatures came in around midnight to 1am and the low will likely be 11pm to core of the storm moves overhead this afternoon and evening. the core will bring some more in the mountains but a few will up next. we'll be back in 60 minutes for action news live at 5. until then.. thanks for watching and have a great evening. police are dealing with yet another serious car

>> judge judy: mr. hankins your first boyfriend? >> yes. >> announcer: from pregnant teen... >> judge judy: did you discuss with her having a life together and starting a family? >> no. >> announcer: ...to angry mom. >> judge judy: and you weren't there when your daughter was born? >> no. >> announcer: now a single parent on her own. >> judge judy: do you support her or not? >> no. >> judge judy: i've had enough of you and your children and your procreation.