THE EVIDENCE
Well most of sells murder weapons couldn't be found i don't know if it was they couldn't find it or they stop looking for the weapons because he killed in so many states there is probably fingerprint evidence because he got caught and admitted to all the murders he committed but they found the knife of the last murder he committed and got caught and his fingerprints when he got apprehended. HE got Apprehended by a sketch that the little girl gave to the police