'For the last time, no,' he answered. 'I am sorry. I thank you with all my heart——'

Zeno did not wait for more, and his head disappeared below the window almost before the prisoner had spoken the last words. Five minutes had not elapsed since he had reached the chamber.

Below, Gorlias had been surprised when he felt the second rope slack in his hand, and when the basket and block, which had been half-way up the wall, began to come down again. The astrologer could only suppose that there was an alarm within the tower, and that Zeno was getting away as fast as he could. The last written message, lowered by the yarn at dusk that evening, had been to say that the Emperor was ready, and that a red light would be shown when the captain was asleep, under the influence of the drug his wife had given him. It could not possibly occur to the astrologer that Johannes would change his mind at the very last moment.

'Take care!' Gorlias whispered quickly to the woman at his elbow, as soon as he was sure of what was happening. 'He is coming down again.'

'Alone?' The anxious inquiry answered his words in the same breath.

'Alone—yes! He is on the rope now, he is coming down, hand under hand.'

The woman slipped down the inclined surface, almost fell, recovered her foothold, and nearly fell again as she sprang into the boat, and threw herself at full length upon the bottom boards. Zeno was half-way down, and before she covered herself with the canvas she glanced up and distinctly saw his dark figure descending through the gloom.

She had scarcely stretched herself out when she was startled by a loud cry, close at hand.

'Phylaké! Aho—ho—o! Watch, ho! Watch, ho!'

A boat had shot out of the darkness to the edge of the pier. In an instant three men had sprung ashore, and were clambering up the sloping masonry towards Gorlias. The woman stood up in Zeno's skiff, almost upsetting it, and her eyes pierced the gloom to see what was happening.