CHAPTER LXIX.

CROMWELL'S HOUSE. It was really Mordaunt whom d'Artagnan had followed, without knowing it. On entering the house he had taken off his mask and the false beard, and mounting a staircase, had opened a door, and in a room lighted by a single lamp found himself face to face with a man behind a table. This man was Cromwell. Cromwell had two or three of these retreats in London, unknown except to the most intimate of his friends. Now Mordaunt was one of these. "It is you, Mordaunt," he said. "You have arrived late." "Gen…