a pair of jeans, a pullover and some socks were given to trace evidence analyst devin crago-stasicha. using tape lifts, she found numerous fibers. >> it wasn't like i just found one or two of these carpet fibers. i had multiple of these fibers from different articles of her clothing. you could not ask for much better than that. >> magnified 400 times, devin noticed that there were two different types of blue fibers presumably from two different sources. >> one was a light blue, and it was a very sharp angular triangular shape, and then there was a lighter kind of a bluish gray fiber that was also triangular but also more round. the nodes weren't as sharp. >> triangular or trilobal fibers are usually from carpet. there were other fibers on dana's socks. these were round and small. the type normally seen in ropes. this was consistent with dana saying her ankles were tied with rope. the investigation was taking a 180 degree turn. now the forensic evidence was corroborating much of what dana was saying. >> i was extremely impressed even to the most minute detail, she -- she remembered and