"Number Three, am I hearing this right? Sounds like the call of a mountain hen!"
"I think it sounds the same. Is it in a cave?"
"There are lots of caves here. Let's search them one by one. Maybe someone is trying to snack on a mountain hen!"
"I think you're the one craving a snack! As if you'd find any living soul here!"
"Haha, Number Three, we can feast on the mountain hen, then report back that Arthur Lindsey and Ella Lacey have plunged and died at the bottom of the cliff! Their bodies were snatched and eaten by wild beasts, leaving not a bone behind. Isn't that perfect?"
"Big brother, that does sound perfect. But considering the old man's peculiar behavior, what if he demands proof of their death?"
"That's easy! When we return, we can go to the funeral home, buy a few bones from the dead and pass them off as theirs. The old man wouldn't know whose bones they are, anyway!"
...
Their raucous chatter was abruptly carried over by the sea breeze, assaulting the ears.