put up on it? pictures of her, her license plate. by the time they find the car, it s halfway underwater. when we saw him riding a bike, we said, oh, that s what he did. he thought he was smarter than we were. if he couldn t have her, nobody could. . hello, welcome to dateline. crystal mcdowell was a new mom itching to start a new life before she vanished. then hurricane harvey came to town and a lead investigator forged ahead, uncovering a series of clues, as the flood waters receded, he discovered the same deadly storm that slowed the investigation had flushed out crystal s killer. here s dennis murphy with before the storm. the woman captured on security camera, moving ghost-like from one room to the next is 37-year-old crystal mcdowell, a real estate agent from baytown, texas. it s thursday, august 25th, 2017. at 7:35 a.m., crystal gets into her black mercedes coupe and backs out the driveway. looks like she s on her way to work. but crystal never makes it t
significant. and this call for schools to implement regular testing. talk us through what you re hearing from sources. reporter: hallie, obviously, this is shaping up to be a pretty significant speech from the president after a summer in which he had hoped we would be looking at the downslope of the covid-19 pandemic and focus on other issues, but instead the delta variant changed those plans. white house officials are casting this speech as sort of everything they ve been trying to do, but bigger and bolder. one of those specifically already has to do with something the president himself did a couple of months ago. we talked about in july when the president ordered federal agencies to require a vaccine requirement on their staff or give them an option short of a vaccine of doing regular attestation of their negative status from covid-19. what the president is expected to do today sign an executive order, directing those federal agencies to give up that second option. yo
fence around the capitol. those concerns come as we get a look at brand-new fbi video of the person they think planted pipe bombs the day before the insurrection. we re also following breaking news in afghanistan. 200 more evacuees taking off from kabul today, ending an impasse with the taliban. among them, more americans. this is the brand-new video of that flight. we re live from the city where that plane is expected to land. but we begin with breaking news. a new phase in the pandemic fight. in just a matter of hours, president biden is set to lay out his next big push to stop the spread of covid and to boost vaccinations. one part of the six-point plan is coming into much sharper focus in just the last 90 minutes. we have now learned that president biden will sign an executive order requiring all federal workers and contractors to be vaccinated. plus, there s some new guidance for schools as pediatric cases rise. nbc s mike memoli is at the white house for us. nbc s cal p
single dose. all this as schools are reopening across the country. jonathan serrie is live in atlanta for us. here in the southeast many school districts have already reopened and here in metro atlanta several school districts are reporting first cases of covid-19. the numbers in the hundreds. the delta variant is more than two times as contagious as previous strains of the virus and although school children, children in general are at low risk, relatively low risk for serious complications from the disease compared to older folks, their hospitalization numbers are increasing. in fact, twice as many kids have died from covid as they would in a previous typical flu season. obviously this is something people need to take seriously and causing educators and some politicians to rethink mask mandates. back in the spring arkansas governor hutcheson, republican, signed a law blocking school districts and other entities from imposing mask mandates. he now regrets that decision.
she had everything she wanted. but she longed for one thing more. i m positive. 5000% sure. this guy was going to. kill van it happened. her new husband, police said, murdered in their town house. something happened at her house and she needs to get to the house, fast. was this crime all that it seemed? she played such a good game and that people didn t know. a surprise was coming. you don t know what to think. and it would arrive from beyond the grief. oh, my god. there has not been a story like this, ever in palm beach county history. is she the villain? is she the victim? who knows? that is what makes her riveting? and she is infamous and probably will be forever. hello, and welcome to dateline. well when dalia dippolito and michael dippolito, first met, it was instant fireworks. an immediate attraction that turned into a fatal attraction. and to crack the case, investigators needed to know was dalia dippolito diabolical, or the winning pawn in