midnight
But no one responded to the summons . He looked up and saw lights in the window . So he knocked again , and louder . After waiting several minutes , and not being admitted , Mr. Grim tried the door and found it unfastened ; but the passage into which he stepped was dark as midnight . After knocking on the floor loudly with his cane , a door opened above , a gleam of light fell on an old stairway , and a rough voice called out , `` Who 's there ? '' `` Does Mr. Dyer live here ? '' `` Be sure he does ! ''