Dulcie and Daisy were very happy as they made their way, for the last time, through the familiar housemaid’s closet, to their own trunk-room, but their troubles were not yet over. In the excitement of the moment they had quite forgotten the important fact that Mary was cleaning the nursery. Now it happened that at the very moment when the two little figures emerged from the trunk-room, Mary had gone out into the hall, and the sight that met her eyes was so astonishing that, as she afterwards expressed it to Bridget, “she nearly dropped down stone dead on the spot.” Explanations followed, and Mary was made acquainted with the famous door in the wall. “Grandpa had it cut through when his brother lived here,” Dulcie explained. “They were both writers, and they had their studies up here on the top floor. The door was so they could go from one study to the other without having to go down-stairs. We’ve known about it for a long time, but we couldn’t tell, because we were afraid Grandma would fasten it, and then we couldn’t go to see poor Miss Polly. But now we don’t care whether Grandma fastens the door or not, because of course Miss Polly’s brother will take her home with him, and we won’t want to go in next door any more.” Mary looked down thoughtfully at the two flushed little faces. “If Mrs. Winslow finds out there’ll be a fuss,” she remarked. “Maybe I can fasten the door myself; I see there’s a bolt.” “You mean you won’t tell Grandma?” cried Dulcie, scarcely able to believe in their good fortune. Mary did not answer, but going to the door, she seized the heavy bolt, and with one turn of her strong fingers, fastened it securely. “There,” she said, “I guess that’s safe enough. Nobody can get in here from the other side, anyway. I can’t see there’s any call to say any more about it. I’ve heard of that poor lady next door, and I guess it’s a good thing you went to cheer her up once in a while. I’m glad her brother’s come to look after her.” So Grandma was not told of the door that had remained unfastened for so many years, and when Molly and Maud returned, they were regaled with such a wonderfully exciting story of the morning’s happenings, as fairly took away their breath, and caused them to almost forget to describe the parade. “It’s just exactly like a book thing,” Molly declared, “breaking the news to Miss Polly and all, but I wish you hadn’t run away so quick. It would be so interesting to know what they all did.” Daisy blushed. “We couldn’t have stayed,” she said. “It was all so sort of solemn, you know, and beautiful. Perhaps we can go in again this afternoon--not through the door in the wall, that’s bolted--but when we are out for our walk. We can find out how Miss Polly is then, and you must see that adorable baby.”