for years, matt leili has been watching everything that goes on in his home via surveillance video. s believe it had been deleted intentionally. they wanted to ask matt some questions. they were about to get their chance. back to dennis murphy with "the house on sidney's cove." >> reporter: in march 2015 matt leili returned to georgia for the first time since he'd left the state three years earlier. it was money that brought him back, a court proceeding concerning a payout from his wife nique's life insurance policies. >> i knew he was coming down. that made me uneasy. it made me feel really creeped out. >> this is three years later. >> mm-hmm. what we didn't know was that the whole federal courthouse was actually crawling with plainclothes gwinnett county police. >> they were taking him down that day? >> they were. we had no idea. >> reporter: sergeant john richter says the plainclothes cops waited all day for just the right moment to make their move. >> we get him on the -- on the outside of the courthouse. >> who makes the collar? how's it go down? >> myself and detective washingt

before passing sentence, the judge gave matt leili once last chance to have a say. >> mr. s there anything you want to say? >> i didn't do it. i'll be filing an appeal. >> with that, the judge asked matt leili to rise and receive his sentence. >> i'm going to follow the state's recommendation as to count one and have you sentenced to life without the possibility of parole. >> it was a bittersweet ending for nique's family. they'll never see matt leili again. but as niquie leili's youngest girls left the courthouse to go back north with their grandfather, it seemed just as likely that they would never see them again either. >> they were my girls. i still love them to this day. taught them how to read. got them ready for school in the mornings. >> you'd like to have a relationship with them. >> i would love to have a relationship with them again. i don't know that that day will ever come. but i want them to know my door is always open. but i don't know if that day will ever come. >> one murder, so many victims. >> that's all for this edition of "dateline extra." i am tamron h

> i raised my hands and said, "praise god." >> reporter: in addition to facing a murder charge, matt leili was eventually charged with sexual assault and multiple counts of evesdropping. a few weeks after his arrest nique leili's daughters, amanda and rebecca, posted an edited video on youtube in support of their dad. >> so girls, tell me what life was like growing up in your home. >> it was always happy and loving. most of the time my mom was traveling. my dad was mostly the one taking care of us. >> reporter: in the video the girls claimed that their mother hated her own family and those same spiteful relatives were the primary reason their dad was in jail. >> they've never liked my dad, and i've been reading things online. i've been watching the news. and i can see the hatred that they have for my dad. and it's just ridiculous the lies they're spreading. that video was devastating. what, they wondered, had happened to those girls in the four years they'd been in vermont? >> as far as i can tell, he poisoned them against us. and i can only attribute that to, you know, them living in a ho