real family, for their travel about together, and Henderson is a
great traveller, always on the move. It is only within the last
weeks that he has returned, after a year's absence, to High
Gable. I may add that he is enormously rich, and whatever his
whims may be he can very easily satisfy them. For the rest, his
house is full of butlers, footmen, maidservants, and the usual
overfed, underworked staff of a large English country house.

"So much I learned partly from village gossip and partly from my
own observation. There are no better instruments than discharged
servants with a grievance, and I was lucky enough to find one. I
call it luck, but it would not have come my way had I not been
looking out for it. As Baynes remarks, we all have our systems.
It was my system which enabled me to find John Warner, late
gardener of High Gable, sacked in a moment of temper by his
imperious employer. He in turn had friends among the indoor
servants who unite in their fear and dislike of their master. So
I had my key to the secrets of the establishment.

"Curious people, Watson! I don't pretend to understand it all
yet, but very curious people anyway. It's a double-winged house,
and the servants live on one side, the family on the other.
There's no link between the two save for Henderson's own servant,
who serves the family's meals. Everything is carried to a
certain door, which forms the one connection. Governess and
children hardly go out at all, except into the garden. Henderson
never by any chance walks alone. His dark secretary is like his
shadow. The gossip among the servants is that their master is
terribly afraid of something. 'Sold his soul to the devil in
exchange for money,' says Warner, 'and expects his creditor to