“You’re right.  Run in.  There may be a danger for her.”

Doria was triumphant.

“Even you do not think of everything,” he cried; but the other did not answer.  On him lay a load of responsibility and a heavy sense of failure.

He directed Doria how to act, however.

“Tell Mrs. Pendean and the servant to lock up the house and then join us,” he said.  “They had better come to Dartmouth, and they can return presently with you, after you have landed me.  Beg that they do not delay a moment.”

Doria obeyed and in ten minutes returned with Jenny, dazed and pale, and the frightened domestic still fumbling at her bodice buttons.  They were both in great fear and full of words; but Brendon begged them to be quiet.  He warned Jenny that the worst was to be dreaded for her uncle, and their awful news reduced her to silence quickly enough.  Thus they sped on their way, leaped between the harbour heads before sunrise, and soon came ashore at the landing stage.

Doria’s work was now done and, having directed him to take the women back, Mark bade them all keep the house until more news should reach them.

“Telephone to the police station if you have anything to report,” he directed, “but should the man appear and attempt to enter, prevent him from doing so.”

He gave them further directions and then they parted.

In half an hour the news had spread, search parties set out by land, and Brendon himself, with Inspector Damarell and two constables, put to sea in the harbour-master’s swift steam launch.  Some food had been brought aboard and Mark made a meal as he described the incidents of the night.  It was eight o’clock before they reached the cavern and began a methodical search over the ground and upward.  Mark had arranged with Doria that a signal should fly from “Crow’s Nest” for him if there were any news; but nothing had happened, for the flagpole was bare.

Then began a laborious hunt in the cave and the tunnel by which it was approached from above.  Morning light filled the hollow place and the officers working methodically left no cranny unexplored; but their combined efforts by daylight revealed little more than Brendon had already found for himself in the darkness.  There was nothing but the trampled sand, the partially eaten store of food, the lamp on its stone bracket, the black blot of blood, and the shallow trench left by some rounded object that had been dragged to the steps.  The tide was down but the little beach only displayed the usual debris at high-water mark.  Inspector Damarell returned to the steam launch and bade the skipper go back to Dartmouth.

“We’ll ride home by motor from above,” he said.  “Tell them to bring my runabout car to the top of Hawk Beak Hill; and let ’em fetch along some sandwiches and half a dozen bottles of Bass; I’m thinking we shall want ’em by noon.”

The launch was off and once more the chimney with the steps, the inclined plane beyond, and the plateau halfway up the cliff were all examined with patient scrutiny.  The police went at a foot’s pace, yet nothing appeared save an occasional drop of blood upon a stone and the trail of the object dragged upward on the previous night.