it is that of a teenage girl found bludgeoned to death in the rural town of blairstown, new jersey. still has no name other than one lovingly given to her by police 30 years ago this weekend. that name is princess doe. but now investigators are closer than ever to finding her real identity. lieutenant stephen speirs is the lead investigator on the case. lieutenant speirs, we're looking at this 3d rendering that you have sent us. this is the first time it's been seen by anyone but investigators. can you just give us an idea of what we're looking at here and how critical this might be? >> yes. i'm very excited about this. a lot of times in cases as time goes on it becomes more difficult to deal with those cases. and what i found with cold cases as time goes on, technology has advanced so much that time is a friend. and what i've been able to do is with the assistance of the national center for missing and exploited children, i sent the skull of princess doe to them. they in turn sent it toot smithsonian institute. and they were able to do what you see here. this is a high resolution c