welcome to "world news tonight." donald trump intensifying his conspiracy claims. saying the election will be rigged, that the media is plotting against him, even accusing "saturday night live" of a hit job. this, as he faces another allegation of sexual harassment. while questions are mounting for hillary clinton over new wikileaks. over the edge. a pickup truck plunges 60 feet from a california overpass, slamming into a motorcycle festival, killing four. what we've now learned about the driver. double threat. the powerful storm lashing the west coast. from san francisco to seattle, hurricane force wind gusts. and one wildfire's path of destruction. home takeover. a woman brought in to help moves in and won't move out. now the legal trouble.

the widow who hired her allegedly locked out. and, freeway shooter. a gunman firing at random cars on the interstate. one woman struck and killed. plus, the moment a k9 helped police take the suspect down. good evening. thanks for joining us on this sunday. i'm tom llamas. we begin tonight with the 23-day sprint to election day. and donald trump sharpening a new line of attack. a brand-new abc news/washington post poll showing hillary clinton with a four-point advantage over trump, but that's within the margin of error. the poll also shows enthusiasm for trump fading, and two-thirds of registered voters rejecting his claim that he did not make unwanted sexual advances to women. trump firing off a tweet storm with his latest attack that the election is rigged.

and clinton's campaign facing some tough questions. after a ninth day of wikileaks e-mails. more on that in a moment. but we begin with mary bruce, covering the trump campaign. >> reporter: tonight, donald trump is lashing out. saying the election can't be trusted. >> the election is being rigged by corrupt media pushing false allegations and outright lies in an effort to elect hillary clinton as president. >> reporter: without evidence, trump is increasingly saying he's the victim of a conspiracy. in less than 48 hours, trump claiming a rigged election more than 20 times, even suggesting "saturday night live" is in on it. tweeting, time to retire, boring and unfunny show. alec baldwin portrayal stinks. media rigging election. some trump supporters are already bracing for a fight. >> i'll do everything in my power to take her out of power.

>> reporter: trump's running mate trying to reassure the public. >> i'm ready for a revolution, because we can't have her in. >> reporter: trump's running mate tried to reassure the public. but the clinton campaign says trump is using scorched earth scare tactics. >> he knows he's losing. >> reporter: trump is ramping up his attacks as more women accuse him of sexual misconduct. kathy heller saying that trump kissed her without consent at a mother's day event. trump's campaign denies the allegation, saying it would have been the talk of palm beach for the past two decades. lies. >> reporter: trump going after his accusers says in t trump groped her for 15 t ladies in t it would be one second, and it ul

>> reporter: and with the final clinton may be on drugs. . the controversy, our new poll holed up with her debate prep wednesday night. but the campaign also tonight,

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alex marquardt, reporting from the front lines tonight. within hours.backed by u.s. s.d today, we vite a post, face-to-face with the enemy. this base is the closest one to. in fact, we can see an isis flag on the next ridge over, just under a mile away. it routinely comes under mortar and sniper fire. these fighters have lost friends here. and they tell us they are impatient for this battle for mosul to get under way. including farhang, who didn't want his face shown for security reasons. he left a life in canada to

fight isis. >> isis is probably one of the worst terrorist organizations we have ever seen, in history i think, probably. and i think it's very important for everybody that can do something to stand up and fight back. >> reporter: the iraqi military has dropped leaflets on mosul telling residents to stay away from isis positions. around 1 million people are expected to flee the fighting in what the u.n. says may be the biggest humanitarian crisis this year. tom? >> alex, thank you. meantime, more hostile activity involving a u.s. w warship off the coast of yemen. the navy destroyer uss mason firing, the navy is reviewing the incident, coming days after the u.s. military launched retaliatory strikes which knocked out three radar sites in yemen. back here at home, to some dangerous weather out west. a powerful storm lashing the

coast from northern california to the canadian border. knocking down trees and knocking out power. and then in nevada, a fire destroying 22 homes. and threatening 500 more structures. rob marciano with the forecast in minutes. but first, neal karlinsky reports from the storm zone. >> reporter: the winds so strong, this man leaning into the blast of sand. gusts approaching 60 miles per hour. the powerful storm packing a one-two punch of drenching rains and strong winds from seattle to portland. this home outside olympia, washington, smashed when a tree blew on top of it. >> we all stood up like, "what's that noise?" and then it just crashed. crashed right through the house. >> reporter: in portland, flash flooding swamped cars. one man forced to climb out his window to escape. >> i didn't realize it was going to be waist-high. so i was pretty scared. >> reporter: again and again though, it was the wind wreaking havoc over two days of storms, bringing down trees on top of cars, across roads and power lines. elsewhere in the west, it's

wildfires causing problems. red flag warnings stretch from new mexico to south dakota right now, including parts of eight states. the wind-driven wildfire north of carson city, nevada, has already destroyed 22 homes and continues to threaten hundreds more. this man evacuated along with his pets. >> went outside and could see flames in the distance to the south of me. >> reporter: but tonight, here in the northwest, the cleanup is on. and a big sigh of relief, too. this storm, predicted to be historic, wasn't nearly as bad as feared. tom? >> neal, thank you. >> i want to bring in rob marciano, the west still getting pounded, though. >> yes, the jet stream that powered the storms is still hitting the west coast. windy in california, rain showers getting down to southern california as well. but more heavy rain for the pacific northwest.

and the winds, critical fire danger. red flag warnings from rapid city to amarillo. and tomorrow, look for a high of 90 in dallas, 82 in d.c. and into the 80s in new york. hard to believe it's the middle of october. >> rob, thank you. turning now to a deadly crime spree in las vegas. beginning with random shots ringing out on a busy freeway, and ending with a tense standoff. here's late details from ron claiborne. >> we do have two victims. >> reporter: a shooting rampage on interstate 15 in the middle of las vegas. reports of a gunman driving down the highway, opening fire on other cars. bullets hit three vehicles, including one with a husband and wife inside, causing them to crash into a road barrier. that woman, 48-year-old tracy donahue, killed. her husband injured. two more people were also hurt. >> totally random. unrelated. i don't know why he would shoot at all these vehicles. >> reporter: the alleged gunman, 27-year-old kenneth mcdonald,

then drove to this drug store. walking in, guns drawn. >> i seen a guy walking toward me and he had two guns in his hands. >> reporter: inside the store, police say he tried to sexually assault a woman. >> we need a rifle team on the southeast side of the business. >> reporter: police officers confronting mcdonald outside the store. the standoff caught on camera. when mcdonald refused to surrender, the police dog takes him down as officers swoop in to make the arrest. mcdonald has been charged with murder and attempted murder. police say they have no idea why he allegedly began shooting on the freeway. >> ron, thank you. there's much more ahead on "world news tonight" this sunday. coming up, when the caretaker you hired takes over your home. words of warning for every family. and, the deadly accident on the water. the stunning video, the speedboat soaring out of

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back now with a story striking fear in the hearts of homeowners, especially those an elderly relative. here's adrienne bankert. >> reporter: tonight, a community fighting back on behalf of a 90-year-old woman trying to get back into the home she's lived in for nearly six decades. >> i think that she's heartless. she's heartless. >> reporter: fran breslauer is talking about the woman she hired a year ago to care for her dying husband.

cheryl sherrell, featured here on a 2010 episode of "hoarders: buried alive," moved into breslauer's home. but when she tried to fire sherrell, she refused to leave, even after breslauer's husband passed away in january. >> she got to be very nasty after that. >> reporter: both women filing restraining orders against each other, sherrell claiming the widow punched her in the arm. >> my mother, she's 90 years old, in failing health. >> reporter: fran claims sherrell changed the locks. her story recently brought to light by our san diego affiliate kgtv. we knocked on the door, we called sherrell, called her attorney. so far, no response. across the country, other stories of homeowners locked out. this one in santa cruz, where airbnb renters caught on camera refused to leave. experts say the best way to keep this from happening to you, do not hire a caregiver through craigslist, the newspaper, or even a friend's recommendation.

only use a bonded, insured caregiver agency. tom? >> adrienne, thank you. up next, is starbucks coffee too hot? the coffee giant facing a lawsuit. what a customer said happened to her. and why the moon is putting on what scientists are calling a super show tonight. what to look out for. eat more fiber. flax seeds. yogurt. get moving. keep moving. i know! try laxatives. been there, done that. my chronic constipation keeps coming back. i know. tell me something i don't know. vo: linzess works differently from laxatives. linzess treats adults with ibs with constipation or chronic constipation. it can help relieve your belly pain, and lets you have more frequent and complete bowel movements that aasier to p do not give linzess to children under six and it should not be given to children six to seventeen. it may harm them. don't take linzess if you have a bowel blockage. get immediate help if you develop unusual or severe stomach pain, especially with bloody

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want. >> reporter: call what you're seeing here, sofia sanchez in her own words. >> are you smart? >> yes. >> reporter: a video of her mom asking her questions that got 5 million facebook views this month. for this part especially. >> little miss. >> yes? >> do you have down syndrome? >> yes, i do. >> is down syndrome scary? >> no, it's not scary. >> reporter: and the story -- sophia, who is 7, was born in ukraine and was adopted when she was 16 months old. joining a family where her older brother, joaquin, also has down syndrome. >> i'm able to give my son a sibling that understands him. that is like him. they can share their journey together. >> reporter: which puts the sanchez family in the forward ranks of a movement which asks society to be more accepting of

people who are different. >> she's being a self advocate of people with disability. they have a love of life. >> reporter: look how confident this little kid is. meaning we're closer to the day when acceptance will be total. john donvan, abc news. >> tonight, we salute sophia and her family for being "america strong." "gma" first thing in the morning, david muir will be right back here tomorrow night. i'm

here's a sneak peek at tonight's "afv." we know you're gonna love it. ♪ ah! keep going, keep going, keep going, keep going -- oh! ah! ah! [ cat screeches ] [ cheers and applause ] welcome to "america's funniest home videos." and now, here he is, the host of our show, alfonso ribeiro! [ cheers and applause ] hey!