The Hand in the Dark by Arthur J. Rees — Read

Strong in his conviction that the story of Hazel Rath was largely the product of an hysterical imagination, Merrington dismissed it from his mind and devoted all his energies to the search for Nepcote. The task looked a difficult one, but Merrington did not despair of accomplishing it before the day came round for the adjourned hearing of the charge against the girl. He knew that it was a difficult matter for a wanted man to remain uncaptured in a civilized community for any length of time if the pursuit was determined enough, and in this instance the military police were assisting the criminal authorities.

Merrington's own plans for Nepcote's capture were based on the belief that he had not the means to get away from London unless the Heredith necklace was still in his possession. As that seemed likely enough, Nepcote's description was circulated among the pawn-brokers and jewellers, with a request that anyone offering the necklace should be detained until a policeman could be called in. He also had Nepcote's former haunts watched in case the young man endeavoured to approach any of his friends or acquaintances for a loan. Having taken these steps in the hope of starving Nepcote into surrender if he was not caught in the meantime, Merrington next directed the resources at his command to putting London through a fine-tooth comb, as he expressed it, in the effort to get hold of his man.