They came in, to a room that seemed quite full of books. There were books on the tables, books on the floor, books on the mantelpiece and on the window-ledge, books open and books shut, books old and new, books handsome and ugly. The Uncle seemed even to have used books to cover the walls with, as ordinary people use wall-paper. He was sitting at a wide green leather-covered writing-table, and sure enough he had his thumb in a tall brown folio.

They all said ‘Good morning’ politely, and Caroline coughed and said:

‘If you please, uncle, we want to explore the whole house to look for the other book—the book, I mean, that is lost out of the picture. Dame Eleanour’s book, I mean. You said we might. But the drawing-room door’s locked.’

‘Dear me,’ said the Uncle impatiently, ‘can’t you unlock it.’

‘No,’ Charles told him. ‘The Wil—I mean Mrs. Wilmington keeps the key in her under-pocket.’

‘Oh, she does, does she? You won’t break anything? But of course you won’t,’ said the Uncle rather in a hurry. ‘Well, as members of the Society of the Secret Rose, I’ll let you through my secret door.’

He put a folded paper in his book to mark the place, got up, and crossed the room to a low narrow door by the fireplace that looked as though it led to a cupboard. He went through the door and the children followed him. They found themselves in a little carpeted corridor. At the left was a door, closed and barred; to the right a flight of stairs, and in front another door. This the Uncle opened.

‘Here is the drawing-room,’ he said; and there it was. They could see a corner of its carpet, and it was the same pink and grey rose-pattern as the other corner that Charlotte had seen.

‘Now come up here,’ said the Uncle, and led the way. At the top of the stairs was another door. The Uncle opened it, and behold, the well-known corridor, with the stuffed birds and fishes, from which their bedroom doors opened.

‘I will give you the key of this door to keep,’ said the Uncle, ‘and then you can visit the drawing-room when you please. If you do not disturb anything, and refrain from making your visits in muddy boots, Mrs. Wilmington need never know. It will be a secret between us—my little contribution to the Society of the Rose. Like a conspiracy, isn’t it?’ he asked anxiously.