His lips closed. His face changed.
He remembered something.
It was unjust to let it mean anything. But——
Why had Potiphar Potts gone back to that secret tunnel?
Chapter 19
DISQUIETING DEDUCTIONS
Of all his loyal staff, most dependable, sincere and trustworthy was the handy man, Potiphar Potts. Roger knew that.
Honesty compelled him, all the same, to connect the fact stated in that mystifying letter with a fact that had not been important when it had come to him.
Potts, on that memorable night, holding the ponies while Roger had gone to Clark, had, as they discovered on their safe return, gone on into the camp.
When they had gotten back, to report to Doctor Ryder the substitution for the false Eye of the one they had brought, Potts had seemed uneasy, though Roger had accepted the man’s own explanation.
“I’m worried about our idea of you leaving the wedge in the thing that works the rock door,” he had said, “it sounded good when we made the plan. If we wedged the mechanical levers, we said, they couldn’t get out that way and chase us or anything.”