According to the article, Mustafa al-Madani was supposed to be used as decoy for Khashoggi. He even put on a fake beard and glasses - but somehow he failed to remember that he had full grown black hair on his head. Maybe it's just me, but that would be the first thing standing out. Assuming the killing was planned, it was a really botched job - yet one that unfortunately will probably be still worth it for the Saudis.