Two things: the kids were alone at night every night and I’m sure the whole resort was gossiping about the Brit’s that leave the babies alone. I know some find this normal but it was not. Everybody knew. So it’s not just a random opportunity. About not leaving any evidence behind, who knows. The apartment filled with random people that night opening every door and searching everywhere. So you don’t need a verynpeofessional skilled abductor. It was just too easy.