There isn't much to this story at all. Flipping backwards and forwards in time. It gives the impression of there being far more to this case than there really is. There is very little forensic evidence, and what forensic evidence there is is not really in dispute. Don't expect any exciting developments in this story. It is very well produced with flashy graphics, little models and exciting music. That does not cover up for the fact that there is very little here to make a story out of. Perhaps as a 1-hour special it would have been fine but they decided to make it into four parts. There are better stories out there.