They tell Karl he's headed to Jordan to see the cavefront carvings, then divert his to Israel.
They play "Let's kidnap Karl" and then lead him about while letting him shoot a pistol. Turns out he's not all that bad - at least not limp-wristing or pushing his shots.
This guy Karl Pilkington must been getting paid a massive fortune to put up with what he's endured so far. And there are what, at least 4 more Wonders to be seen? If they continued to mess with him like they have done so far, the biggest part of being called an idiot was to have continued to put up with the two guys that send him around the world. I know I would have packed it in well before episode three.
stay safe.