you use to dust up the impression is very bright and so it makes a very good contrast. >> it was successful. they saw one clear print, the heel portion of the killer's left shoe. it appeared to be an athletic shoe. >> most of the prints you see are partial prints. you may sometimes get some full footwear impressions, but with people walking over on top of them, it can destroy the prints and many times you only get partial prints. >> back in the forensics lab, scientists saw what looked to be another shoe impression on a shard of broken glass. so, they placed it in a tank filled with heated super glue. the fumes create a permanent image of the print, and it looked like the toe area of the killer's right shoe. >> because we had a toe area on the glass and a heel area on the linoleum, we basically almost had an entire shoe impression. so, we did have a very good idea what the entire tread pattern looked like.