>> irene garza? >> irene garza. you knew that? >> yeah. >> this is irene garza's cousin. h had learned about irene's murder when she was in high school. how old are you now? >> i'm 25. >> 25 years old, the same age as irene when she died. and like irene, sarah lives with her parents. in fact, irene's old bedroom is now sarah's bedroom. sarah even bears an eerie resemblance to irene. >> you almost have the same hair, i must say. she had long, dark hair. >> noemi asked if she could go in the house. >> see what it triggers back because i was here as a child. the day that she went missing, i was here. >> oh, you were here. wow. >> sarah welcomed her inside where the past came back in a way noemi never imagined. inside, sarah gave something to noemi. after all these years, a high school yearbook from 1949 had remained in the house through three different owners, waiting for the family that would cherish it. >> bye-bye! thanks. >> bye. thank you. >> god bless you. >> what is that? >> they found it in there. >> this is irene's sister's yearbook? >> mm-hmm. irene might even be in