Imagine the largest Great White you can, multiply it by 10 and you have a megalodon, a prehistoric shark-like creature that was thought to be extinct but which (in this rousing tale) lives on in a hidden part of the ocean floor below a layer of gas.
When a band of explorers finds a way to permeate the barrier and descend into an eerie place deeper than the Mariana Trench, they find a shark so large that it eats the explorer's roving pod for breakfast.
Celia and I had great fun trying to figure out who would be eaten and who would survive. We were right about half the time.
Wow, it's good to have her home!