"Wellesley's tumbled to it!" he whispered. "The police suspect—him!"

"Good heavens!" muttered Brent, utterly unprepared for this suggestion. "You really think—that?"

"Dead sure!" asserted Tansley. "That's the theory! What's this red-headed chap called for, else? You listen!"

Brent was listening, keenly enough. The witness was giving an account of himself. Robert Carstairs, qualified medical practitioner—qualifications specified—at present assistant to Dr. Wellesley; been with him three months.

"Dr. Carstairs," began the Coroner, "do you remember the evening on which the late Mayor, Mr. Wallingford, was found dead in the Mayor's Parlour?"

"I do!" replied Carstairs bluntly.

"Where were you on that evening?"

"In the surgery."

"What are your surgery hours at Dr. Wellesley's?"

"Nine to ten of a morning; seven to nine of an evening."