"Really dead?" retorted Mackenzie. "Don't you understand that he has been in his grave for six months?—That I practically saw him die?—That I attended his funeral? By what possible chance can the man be alive?"

"None," I replied. "He is dead, of course. I am sorry for the poor girl. She ought to leave home immediately."

"Girls of her age often have delusions," said Mackenzie. "I doubt not this will pass in time. I am surprised, however, that the Heathcotes allowed the thing to go on so long. I remember now that I have never been near the house since the funeral. I cannot understand their not calling me in."

"That fact puzzles me also," I said. "They came to me, a total stranger, instead of consulting their family physician, and Mrs. Heathcote carefully concealed the most important part of her daughter's malady. It is strange altogether; and, although I can give no explanation whatever, I am convinced there is one if we could only get at it. One more question before I go, Mackenzie. You spoke of Heathcote as a solicitor: has he left his family well off?"

"They are not rich," replied Mackenzie; "but as far as I can tell, they don't seem to want for money. I believe their house, Ivy Hall is its name, belongs to them. They live there very quietly, with a couple of maid-servants. I should say they belonged to the well-to-do middle classes."

"Then money troubles cannot explain the mystery?" I replied.

"Believe me, there is no mystery," answered Mackenzie, in an annoyed voice.

I held out my hand to wish him good-bye, when a loud peal at the front door startled us both. If ever there was frantic haste in anything, there was in that ringing peal.

"Someone wants you in a hurry," I said to the doctor.

He was about to reply, when the door of the consulting-room was flung wide open, and Gabrielle Heathcote rushed into the room.