AUCHINMURN ISLE, WEST COAST OF SCOTLAND
TEN YEARS AGO
The battle for control of the Calder twins’ imaginations began on the afternoon of their third birthday. Sandie was enjoying the last slice of Jeannie’s double-decker chocolate cake when Malcolm raced into the kitchen.
“I’ve found it!” he said, waving a red leather journal in front of Sandie in feverish excitement. “Proof that Hollow Earth is real!”