I think Henry Lee examined the boots. Thomas justifies dismissing Helgoth as a suspect because he doesn't believe a stun gun was used on JonBenet. One has nothing to do with the other! If Helgoth had a stun gun, and some marks on JonBenet might have come from a stun gun, good detective work would be checking out the marks made by the type of stun gun Helgoth owned and looking into his handwriting, alibi and DNA.