1Author's Introduction
8Chapter 6: Book Two – Chapter 1: The Low Frequency
2Chapter 1: The Red Frequency
9Chapter 7: Book Two – Chapter 2: The Crushing Weight
3Chapter 2: Heavy Lifting, Light Gravity
10Chapter 8: Book Two – Chapter 3: The Light Within
4Chapter 3: The Goblins of the Underground
11Chapter 9: Book Two – Chapter 4: The Echo Location
5Chapter 4: The Invisible Thread
12Chapter 10: Book Two – Chapter 5: The Song of the Sea
6Chapter 5: The Living Water
13Author’s Notes: Learning Sparks
7Interlude: The Shelf in the Garage