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 Vance. "The killer is already in the house. He's part of the deadly atmosphere of the place. He's been there for years, nourished by the toxins that seep from the very stones of the walls."

Heath looked up.

"A member of the family? You said that once before."

"Not necessarily. But some one who has been tainted by the perverted situation that grew out of old Tobias's patriarchal ideas."

"We might manage to put some one in the house to keep an eye on things," suggested the Inspector. "Or, there's a possibility of prevailing upon the members of the family to separate and move to other quarters."

Vance shook his head slowly.

"A spy in the house would be useless. Isn't every one there a spy now, watching all the others, and watching them with fear and suspicion? And as for dispersing the family: not only would you find old Mrs. Greene, who holds the purse-strings, an adamantine obstacle, but you'd meet all manner of legal complications as a result of Tobias's will. No one gets a dollar, I understand, who doesn't remain in the mansion until the worms have ravaged his carcass for a full quarter of a century. And even if you succeeded in scattering the remnants of the Greene line, and locked up the house, you wouldn't have stamped out the killer. And there'll be no end of this thing until a purifying stake has been driven through his heart."

"Are you going in now for vampirism, Vance?" The case had exacerbated Markham's nerves. "Shall