this is "nightline." tonight, breaking news, a suspect in connection with the quadruple homicide in the d.c. mansion is now in custody. tonight, a special agent tells us exclusively how they identified him from a domino's pizza crust. revealing his connection to the family members they believe he killed. for 60 years, it's been called the happiest place on earth. now it's time to celebrate. tonight, we are going inside the magic at a blowout anniversary bash. learning the secrets and high-tech tricks that will take disneyland in to the future. and we're going on the town with zedd. he's not on top of the world yet but he's definitely on top of new york city. tonight the musician turns the empire state building in to a dance club to celebrate his new

album. how he's getting his new fans to stay the night. but first the "nightline" 5. >> stave on all mattress sets and specials from seely, serta, icomfort and more. queen get for $179 or a simmons set from $279. get free mattress delivery set up with minimum purchase of $787. and special financing on a set of $499 or more on your macy's card. >> number one in just 60

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believe murdered a wealthy washington, d.c. couple their young son and their housekeeper is now in custody. abc's ryan smith has exclusive new details. >> reporter: breaking news tonight a frantic interstate manhunt ends with this man, daron dylon wint in custody. >> a long 48 hours and it was a collaborative effort of a lot of different agencies all of them part of our task force. >> reporter: the suspect in that brutal quadruple homicide at this washington, d.c. mansion charged with murder in connection with the deaths of savvas savopoulos his wife amy, their 10-year-old son phillip and their housekeeper veralicia figueroa. when captured in a vehicle after a police chase. >> we continued to follow him. we called p.g. county police and they sent up a helicopter. we got to a situation where we could successfully take him down and we were able to safely pin the vehicles, both vehicles and place him under arrest. >> reporter: he was considered armed and dangerous. relatives describe wint as an

angry, troubled man. >> very hostile arrogant. he doesn't listen. >> reporter: wint has a long rap sheet with arrests for burglary assault and concealing a dangerous weapon. that criminal history led to his identification. police say they tracked him down from dna on a crust of domino's pizza, ordered to the savopoulos house while they were held hostage. >> just about every law enforcement officer across the country that is aware of his open warrant are looking for him. >> reporter: now police say wint was no stranger to the slain family and their business. >> this is american iron works, a steel and iron manufacturer. savvas savopoulos was the ceo and police say daron dylon wint worked for the company at some point and that's the connection between the two. employees there still in a state of shock. >> how's the company holding up? >> not good. >> reporter: not good. >> if the husband knew who he was all four could identify him

at some point. to eliminate the witnesses you kill all of them. >> reporter: the family's ordeal began last wednesday evening. >> i hope you get this message. >> reporter: the employee receives a message instructing her not to come to work the next day. >> amy is in bed sick tonight and she was sick this afternoon. vera offered to stay and help her out. so she's going to stay the night here. vera's phone died and doesn't have her charger and i don't have a charger that fits her phone. i don't know if you can tell anybody that would be worried about her that she is just going to be here with us tonight. >> we know this voice mail is all wrong. if you listen to it he has a very flat affect. if this were a casual call it would be along the lines of hi remember we don't need you tomorrow. everything's fine. i'll see you on monday click.

it was a slow methodical flat affect call and if you listen very carefully, you can hear some sort of commotion in the background. >> reporter: that same night two domino's pizzas are ordered and left on the doorstep of the home. >> we were contacted by the police the day after. we can confirm we made a delivery to the house. >> reporter: the next morning starting at 7 a.m., savopoulos made a flurry of calls. some to his bank and an accountant. that morning an assistant of savopoulos dropped $40,000 off at the house. a few hours after the money is dropped off, the house is up in flames. >> 3201 woodland drive, three story house fire on second floor. we removed four victims. it's going to be a prolonged secondary search. >> this case sort of wreaks of amateur behavior.

fwhapd that house? what motivated the bad guy or bad guys to harm these people in such a horrific way? that remains to be seen. >> reporter: police information suggest that savvas savopoulos amy and vera were doused with gasoline and stabbed to death. while 10-year-old phillip was found in his room burned beyond recognition. the family's car was found on fire in this church parking lot, 15 miles away. this surveillance video, the first clue as to who committed this horrific crime but it was here at the atf specialized lab in more thr that police say they got their tloing daron dylon wint. >> every piece of evidence taken from that scene was sent to our lab. our lab worked around the clock on the evidence received from there. >> reporter: authorities say the lab matched trace dna evidence from the domino's pizza to wint. >> the investigation is still ongoing but we have ruled out whether there was or wasn't participation from other people involved in this thing. >> this crime would be difficult

to pull off with one person. you are talking about controlling people for a full 24-hour period and the idea that one person could do that possible of course. the ten din dency is i think there would be more than one person. >> reporter: police tracked down wint's girlfriend in this home. wint was still at large earlier this evening. police interviewed wint's girlfriend at this police station earlier today. they say she was cooperative. >> reporter: wint was a one-time marine recruit who grew up in guyana. his girlfriend told police she believed he would turn himself in. before wint was taken in to custody, the savopoulos d.c. community was on edge. >> what do you say to members of the general public who maybe concerned he may come after others? >> right now i think we have established there is some specific connection between the suspect and the victims here. so this was not random. we -- hopefully will have mr. wint in our custody very

soon. >> right now everybody in the neighborhood shaken up. they are not sure what to think. >> reporter: the savopoulos have two surviving daughters who were away at boarding school at the time of the killings. police have their families' alleged killer in custody. >> tonight we were able to find the location of wint and take him down and arrest him. >> reporter: for "nightline," i'm ryan smith in washington, d.c. next, living up to the legacy of walt disney is no easy task. but creative minds try to do just that each day. we're there, behind the scenes as they con jury up the ultimate celebration for disneyland's 60th anniversary. ♪ and musician zedd talks breaking free on his new album. ♪ good. very good. you see something moving off the shelves and your first thought is to investigate

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over a half century, creative minds have been making the magic that disneyland is famous for. tonight, we're learning about how it comes together in a behind-the-scenes look at our parent company's 60th anniversary celebration at what is called the happiest place on earth. here's abc's -- >> what happens at disneyland is magical. it dazzles on the outside because of what happens behind the curtain. >> san diego, california. >> reporter: on the eve of disneyland's 60th anniversary, "nightline" was invited behind the scenes to see what it takes to put on the biggest party this

park has ever seen. by the people who do it best. our first stop. >> you want to see what is behind the door? >> yeah. >> a secret v.i.p. apartment located in a hidden corner of the park. you can't book a stay here. you have to be invited. >> boom you are inside of disneyland park. >> one lucky fan will win a stay here. inside each room contains unique, disney magic elements. the centerpiece is fit for a princess. >> hand crafted cinderella slipper with a diamond and topaz pendant. >> cinderella is a lucky girl. >> the rides we all remember as a kid. look unchanged, identical to the day disneyland opened its gates in 1965. walt disney was inspired to build this as a dream playland for his daughters. >> it came about when my

daughters were young. it started from a daddy with two daughters wondering where he could take them where he could have a little fun with them. too. for all that come to this happy place, welcome. disneyland is your land dedicated to the ideals the dreams and the hard facts that created america. with the hope it will be a source of joy and inspiration to all of the world. >> reporter: walt was officially there on opening day when this photo was taken and he's worked at disney for over 40 years. >> watched 1954 1955 watched the park being built here and to have a chance seeing what was inside was really spectacular. >> reporter: disney ceo bob ieger shared his thoughts on the iconic celebration. the visit to disneyland is great disney story telling and creates memories that last a lifetime. celebrating the 60th anniversary is celebrating something so near and dear to the hearts of everyone that loves disney.

>> reporter: since then 700 million people have visited the park and with more than 44,000 visitors a day rehearsals must happen in secret and under the cover of darkness. >> the only time we can come out here on main street and view all of the projection is after our guests have finished their way. >> reporter: more than 2 1/2 years of planning have gone in to the celebration. the world of color fountain show delights with 1200 fountains. my colleague jesse palmer got to see how they brought the fountains to life. >> having just watched the show tell me about the complex technology that goes in to this speck tackle. >> >> fountains from 30 to 140 feet tall. we have lighting and fog effects and huge flame effects. >> big question can we do a fire ball? >> we can. here we go. >> for the night parade,

imagineers constructed new floats. >> we have teams of hundreds of people running around making the magic happen. >> reporter: the creator has been focused on bringing disney to the future with high-tech shows featuring the characters we low and love. from mickey's debut to cars and the frozen float. >> when you come here you've love the characters and the music, the visuals that are there. >> reporter: the show is a new spin on an old tradition, reminiscent of the classic electric parade. behind doors of studio b the dancers get in one of the last practices. these balls may look easy but hours of practice have gone in to this routine. >> we had almost 900 people show up for auditions. >> reporter: what? 900? >> yes. it is quite an honor for the performers that were chose. >> reporter: these are a few of the lucky performers that made the cut. since you are the choreographer

maybe you can teach me a thing or two. the parade i'm sure for so many kids it's their first memory as well. there's a lot of pressure on you. >> there is a lot of pressure but i think that is one of the exciting things is we get to continue making magical memories. >> reporter: tonight is the last full dress rehearsal before the public gets the first glimpse at the new parade. >> the costumes are weaved with l.e.d. lights. every piece of their choreography coordinates with the lighting. it is taking it to a new level that we haven't done here before. >> reporter: backstage, the cars unit is getting ready. you look fantastic. when the lights go out the costumes come to life. okay. here we go. and then a mad dash to get front row seats. >> it is really the most magical place on earth to work. every night you inspire people make them happy. leave them with a memory that ten years from now they will go

oh remember that. >> reporter: rachel smith at disneyland california. next what's it like for an up area comer to work with lady gaga gaga? musicianing zedd talks about gain clarity after taking on the queen of pop. >> announcer: abc news "nightline," brought to you by progressive. [ screaming ] rate suckers! [ bell dinging ] your car insurance goes up because of their bad driving. people try all sorts of ways to get rid of them. [ driver panting ] if you're sick of paying more than your fair share... [ screams ] get snapshot from progressive, and see just how much your good driving could save you. when eating healthy and drinking water just isn't enough to ease my constipation i trust dulcolax tablets. i take dulcolax for dependable overnight relief

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from arianna grande to selena gomez, ved has made music with some of the biggest names in pop. now he is celebrating his new album and we are there. ♪ he's that secret power house. a producer writing, mixing triple threat. a rising star behind some of today's favorite songs like "break free." >> reporter: his distinct sound, a breath of clarity in the auto tunes sub culture of electronic. ♪ but now artist and writer zedd wants you to know he's more than one sound. ♪ >> i think as long as you keep music emotional, real and honest it can -- you know anyone can like it. that what's i want. i want to push boundaries. i don't want to sit in a box. i want the box to be bigger

every day. >> reporter: melding his dance music base with pop culture collaborations in his second album "true colors" that dropped this week. >> this album, for me it was important to make a statement to show people my heart isn't just music. no matter if it is rap, rock i try to combine every genre and pull the cultures together and make people emotional when they hear it. >> you end up in the same room with lady gaga and you have to work on an album. there will be a time where you have opinions and you have to say i didn't think this was good to someone that sold 100 times more records than you ever will. >> reporter: tonight we are with 200 lucky fans on top of the empire state building, moments away from his album release. >> every song has its own color and feels different but i wanted

everything to be connected musically which was my challenge. >> reporter: the series took him nationwide. >> it is way cooler than any of us guessed. >> reporter: his unique closest with fans. >> i thank you for your honesty and realness with your music and fans. across the spectrum you are a phenomenal person and thank you for being undeniably you. >> reporter: that makes him relatable and one of new york's tallest towers transforms in to an underground dance club. >> i have never done this bmpl never played this song before. we have no track. >> reporter: zedd has a last surprise. ♪ a never-before-heard acoustic version of the album's name sake. ♪ i will show you my true colors ♪

>> reporter: as midnight strikes, this iconic venue exploding in true colors. a tribute to an artist who hopes his career will be as high and bright as a sky scaper itself. ♪ zedd was born in russia and raised in germany and now rockin' in new york. good for him. longfellow said that music is the universal language of mankind. thank you for watching abc news. tune in to "good morning america" tomorrow for the first day of their summer concert series as singer jessie j. kicks it off in central park and we are on-line 24/7 at abcnews.com. good night, america.

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