He had risen very early, according to his usual custom, and upon opening his front door he found a letter slipped under it, addressed to him. This anonymous epistle informed him that eleven slaves had been arrested, and were to be tried before Alderman Douglass that morning; that the owners were gentlemen of wealth and high standing, and could produce the most satisfactory evidence that the persons arrested were their slaves; consequently Friend Hopper's attendance could be of no possible benefit to them. It went on to say that the magistrate understood his business, and could do justice without his assistance; but if, notwithstanding this warning, he did attend at the magistrate's office, for the purpose of wresting from these gentlemen their property, his house would be burned while himself and family were asleep in it, and his life would certainly be taken. The writer invoked the most awful imprecations upon himself if he did not carry these threats into execution. Friend Hopper was too much accustomed to such epistles to be disturbed by them. He put it in his pocket, and said nothing about it, lest his wife should be alarmed. A few minutes afterward, he received a message from some colored people begging him to go to the assistance of the fugitives; and when the trial came on, he was at the alderman's office, of course. Richard Rush was counsel for the claimants. The colored prisoners had no lawyer. This examination was carried on with much earnestness and excitement. One of the Virginians failed in proof as to the identity of the person he claimed. In the case of several others, the power of attorney was pronounced informal by the magistrate. After a long protracted controversy, during which Friend Hopper threw as many difficulties in the way as possible, it was decided that four of the persons in custody were proved to be slaves, and the other seven were discharged. This decision greatly exasperated the Southerners, and they vented their anger in very violent expressions. The constables employed were unprincipled men, ready for any low business, provided it were profitable. The man-hunters had engaged to give them fifty dollars for each slave they were enabled to take back to Virginia; but they were to receive nothing for those who were discharged. Hence, their extreme anxiety to avoid Friend Hopper's interference. When they found that more than half of their destined prey had slipped through their fingers, they were furious. One of them especially raved like a madman. He had written the anonymous letter, and was truly "a lewd fellow of the baser sort."