>> unfortunately, these boots weren't unique. >> how common are they? you're probably not from here if you don't have a pair. >> and it was impossible to tell the size of the boot from the print. >> in a justin boot heel, it is possible that you're going to have one physical size that would overlap into several different boot sizes. >> nevertheless, investigators asked both suspects, bob johnson and pool contractor curtis pope, if they owned a pair of justin brand boots. bob johnson owned a pair. but the heel of his boots was larger than those at the scene. curtis pope also owned a pair of justin brand boots, which appeared to be new, and willingly turned them over to investigators. >> in this case, my result was inconclusive. i could not eliminate or identify the boot as having made that mark. >> when investigators talked with pope about his boots, they