"Merciful God grant that we are in time," whispered Dr. Cairn. "I could believe once more in the justice of Heaven, if the great knowledge of Sir Michael Ferrara should prove to be the weapon to destroy the fiend whom we raised!—he and I—may we be forgiven!"'

Robert Cairn's excitement was dreadful.

"Can you tell me nothing?" he cried. "What do you hope? What do you fear?"

"Don't ask me, Rob," replied his father; "you will know within five minutes."

The car indeed was leaping along the dark suburban roads at a speed little below that of an express train. Corners the chauffeur negotiated in racing fashion, so that at times two wheels thrashed the empty air; and once or twice the big car swung round as upon a pivot only to recover again in response to the skilled tactics of the driver.

They roared down the sloping narrow lane to the gate of Mr. Saunderson's house with a noise like the coming of a great storm, and were nearly hurled from their seats when the brakes were applied, and the car brought to a standstill.

Dr. Cairn leapt out, pushed open the gate and ran up to the house, his son closely following. There was a light in the hall and Miss Saunderson who had expected them, and had heard their stormy approach, already held the door open. In the hall—

"Wait here one moment," said Dr. Cairn.

Ignoring Saunderson, who had come out from the library, he ran upstairs. A minute later, his face very pale, he came running down again.

"She is worse?" began Saunderson, "but—"