instantly, derek smyer had to be an adult. >> he dropped out of high school so that he could get a full-time job. even though he wasn't making much, he was still doing what he could to support that baby. >> that changes your life? >> it does change your life. and that forestalls a lot of your options? >> absolutely. but derek was a hard-working guy. >> reporter: in 2002, the year after crystal died, derek smyer had another daughter with the same woman. >> if i fall, all this footage is being deleted. >> reporter: for the most part, he wasn't a full-time dad but danielle says he was in his children's lives. as was the whole smyer family. danielle insiftss this father of two wouldn't commission a murder over an unplanned pregnancy. if, in fact, he even was the father of crystal's child. did derek tell you that he was dating crystal taylor? >> no. i never heard of crystal taylor before he was actually arrested