The Nikes were size 13. That is a BIG shoe and not that common. If the "Van's style" shoe print could be show to also be a size 13 it includes BK as the possible leaver of the shoe print. Also, a size 13 is sometimes hard to find. One might be able to trace size 13 shoes purchased and if the person did not pay cash, you might get a hit that BK owned a pair. MOO and speculation.Terrible handwriting. Anyone have any idea what #9 might say? I'm drawing a blank.
Also, I find it interesting that they took a pair of Nike's, yet there was a "Van's-type" print in the house. Hmmm....