"Well, that is all right. I don't think the morning has been altogether
thrown away."

And she walked slowly back to Diana's Grove.

Adam Salton followed the line of the Brow, and refreshed his memory as to
the various localities. He got home to Lesser Hill just as Sir Nathaniel
was beginning lunch. Mr. Salton had gone to Walsall to keep an early
appointment; so he was all alone. When the meal was over--seeing in
Adam's face that he had something to speak about--he followed into the
study and shut the door.

When the two men had lighted their pipes, Sir Nathaniel began.

"I have remembered an interesting fact about Diana's Grove--there is, I
have long understood, some strange mystery about that house. It may be
of some interest, or it may be trivial, in such a tangled skein as we are
trying to unravel."

"Please tell me all you know' or suspect. To begin, then, of what sort
is the mystery--physical, mental, moral, historical, scientific, occult?
Any kind of hint will help me."

"Quite right. I shall try to tell you what I think; but I have not put
my thoughts on the subject in sequence, so you must forgive me if due
order is not observed in my narration. I suppose you have seen the house
at Diana's Grove?"

"The outside of it; but I have that in my mind's eye, and I can fit into