The Trick

Nor was their disposition any cause for delight. Sure, they knew where the nymphs did dwell, but that was, in a manner of speaking, theirs to know and his to find out. With cranky cackles and venomous vim, they told him just what he could do with his quest. But the hero had a trick or two up his sleeve, and by seizing that which by virtue of its scarcity and indispensability they valued above all else, he made them tell him what he wanted to know about the location of the water nymphs.