The entire Clement thing is so bizarre. To me, knowing his history, it makes much more sense that he wasn't a "concerned Brit" trying to "comfort" the parents of a missing child, but rather someone who was trying to get intel on the investigation. I know it's not a popular opinion that the parents aren't involved, but I have yet to see anything that sways me completely into that camp. Open minded on all angles. I think the best thing the cops could have done back then is check Clements phone and see who he had been in contact with directly before and after his having the McCann's over.