"And if he goes on board the steamer?"
"In that case I'll follow him as far as Plymouth to make sure that he does not get off there."
"If he doesn't?"
"I shall know that he has nothing to do with this murder."
"And if he does get off at Plymouth?"
"Why," said Fanks, rubbing his hands, "I shall track him to Mere Hall in Hampshire."
Crate looked astonished, for he could by no means follow the thoughts of his superior. "How do you know that he will go there?" he demanded in a disbelieving manner.
"Because if Dr. Renshaw leaves the steamer at Plymouth under that name I shall find him at Mere Hall as Dr. Binjoy."