after several years, the cold case unit of the michigan state police decided to take a second look at the murders of margarette eby and nancy ludwig. they thought that perhaps the original investigators might have missed something. dna testing revealed the same man killed both women. but they had no idea to whom the dna belonged. so they concentrated on the partial fingerprint from the faucet in margarette eby's bathroom. >> the crime lab was able to identify a small print on the faucet knob in the sink of that bathroom. the faucet knob was actually taken off, taken back to the crime lab, where the fingerprint was photographed, and the knob