"'Oh, miss,' she gasped, 'I made sure you must have seen something!'

"'And so I have,' I answered, 'but it was neither burglars nor ghosts.'

"'Thank God!' I heard her say as she turned her back to me in her grey bedroom—which faced the north. And I took this for a carelessly pious expression and ran downstairs, thinking no more of it.

"A few days later I began to understand.

"The plan of Tresillack house (I must explain) was simplicity itself. To the left of the hall as you entered was the dining-room; to the right the drawing-room, with a boudoir beyond. The foot of the stairs faced the front door, and beside it, passing a glazed inner door, you found two others right and left, the left opening on the kitchen, the right on a passage which ran by a store-cupboard under the bend of the stairs to a neat pantry with the usual shelves and linen-press, and under the window (which faced north) a porcelain basin and brass tap. On the first morning of my tenancy I had visited this pantry and turned the tap; but no water ran. I supposed this to be accidental. Mrs. Carkeek had to wash up glass ware and crockery, and no doubt Mrs. Carkeek would complain of any failure in the water supply.

"But the day after my surprise visit (as I called it) I had picked a basketful of roses, and carried them into the pantry as a handy place to arrange them in. I chose a china bowl and went to fill it at the tap. Again the water would not run.

"I called Mrs. Carkeek. 'What is wrong with this tap?' I asked.
'The rest of the house is well enough supplied.'

"'I don't know, miss. I never use it.'

"'But there must be a reason; and you must find it a great nuisance washing up the plate and glasses in the kitchen. Come around to the back with me, and we'll have a look at the cisterns.'

"'The cisterns'll be all right, miss. I assure you I don't find it a trouble.'