. >> and i'm elizabeth vargas. and this is "20/20." adorable intical twins, gracey and audrey, born and separat in china and then adopted by different families in the united states. they reunited on "good morning america" when they were 10 years old. >> audrey, are you ready? >> yeah. >> you want to do this? >> yeah. >> come on. come over here. all right, gracie. come on out and meet your sister. >> i can just touch you? >> you're doing good, baby. >> now, meet howard burack, who, surprisingly, has a lot in common with those little girls. you always knew you were adopted. >> i did. i was adopted, and, you know, i grew up in a nice middle class -- upper middle class family in a suburban area in rockland county. normal childhood. normal whatever. great parents. >> you went to the louise wise agency. >> yes. >> but in 1998, when he was 35 years old, howard became increasingly curious about his biological mother. he wrote to the louise wise agency to ask for information. somebody called back with news that hit like a bolt of lightning. >>

i'm elizabeth vargas. >> and i'm david muir. it was the kind of teenage party that's no doubt taking place all over the country this friday night, especially with so many graduations being celebrated, but right here tonight, the party that ended in a life-changing he said, she said. >> here to tell the story, one that is igniting a desperately needed conversation about the blurred lines of sexual consent, and sexual assault. a store for every family. here's ryan smith. ♪ >> reporter: it's friday night. the lights, the band, and the entire town is out to see the toros. welcome to spanish fort, alabama. population 8,000. located just east of mobile bay. once the site of one of the last civil war battles. it will later be the site of a different kind of battle. >> very small, close community. everyone kind of knows everyone. >> a very tight-knit community, focused on family, centered on very good schools. >> reporter: bible belt churches may dot this small, affluent community, but here, football is religion. >> in spanish fort, foo