>> the quality of that laden fingerprint was very poor. on a scale of 1 to 10, this laden fingerprint was about to a 2 to a 3. this is the only belt i've ever obtained a fingerprint off of. >> investigators found their next clue in the shards of broken glass. >> there was a beautiful impression, it was maybe half of a shoe or the whole ball area of the shoe was present. >> this may have happened when the killer stepped into the house after breaking the glass. >> so it gave me a lot to work with, with regards to looking for accidental characteristics and markings. >> using various databases, analysts quickly discovered the print was from the left shoe of white puritan brand tennis shoes. also at the crime scene, investigators found a set of keys in the grass, next to one of the ponds on the ten-acre