One of the things that caught most of the interest of Zach's family members was the Underworld. Leonidas, Leonia, and Lexi had heard of it but never come into contact with it or any creatures from the Underworld.
If the Duke and Calserra hadn't already been shocked by Zach's close encounters with the Underworld, that alone would have surprised them, even if not as much. It wasn't easy to learn about the Underworld since they only did something when they were absolutely certain no one would discover anything.
It also wasn't something the Duke and Calserra could freely talk about unless the time came when their children needed to know about it.
Now, however, their youngest was having conversations with the leader of the Underworld and some of his closest subordinates. What was the world coming to?