But, horrible though the serpent was, he was not the sole foe that the knight had to fight with. The giant’s only weapon was his club, but that was as thick as a man’s body, and studded with iron points besides. Luckily for the knight, this was not the first giant to whom he had given battle, and ere the mighty blow could fall he sprang lightly to one side, and the club lay buried so deep in the ground that before the giant could draw it out again, his left arm was smitten off by the knight’s sword.
The giant's roars of pain might have been heard in the uttermost parts of the kingdom, and Duessa quickly guided her baleful beast to the help of her wounded friend. But her way was barred by the squire, who, sword in hand, ‘stood like a bulwark’ between his lord and the serpent. Duessa, full of wrath at being foiled, turned the serpent on him, but not one foot would the squire move till, beside herself with anger, the witch drew out her cup and sprinkled him with the poisonous water. Then the strength went out of his arms and the courage from his heart, and he sank helpless on the ground before the snake, who fain would have trampled the life out of him, and it would have fared ill with him had not the knight rushed swiftly to his rescue, and dealt the snake such a wound that the garments of Duessa were all soaked in blood. She shrieked to the giant that she would be lost if he did not come to her aid, and the giant, whose one arm seemed to have gained the strength of two, struck the knight such a blow on the helmet that he sank heavily on the ground.
The giant raised a shout of joy, but he triumphed too soon. The knight, in falling, caught the covering of his shield upon his spear, and rent it from top to toe. The brilliance that flowed from it burnt into the eyes of the giant, so that he was ‘blinded by excess of light,’ and sank sightless on the ground. At a fresh cry from Duessa he struggled to his feet, but all in vain. He had no power to hurt nor to defend, and fell back so heavily that the very earth shook beneath him, and was an easy prey for his foe, who smote his head from his body.
Duessa, as we know, never stayed with those with whom the world went ill, and she was stealing away quietly, when once more the squire stopped her.
‘You are captive to my lord,’ he said, and, holding her firmly, led her back.
Then Una came running full of grateful words, but when she saw Duessa a cloud of fierce wrath passed over her face.
‘Beware lest that wicked woman escape,’ cried she, ‘for she it is who has worked all this ill, and thrown my dearest lord into the dungeon. Oh, hear how piteously he calls to you for aid!’
‘I give her into your keeping,’ answered the knight, turning to the squire, ‘and beware of her wiles, for they are many;’ and, leaving the rest behind him, he strode into the castle, meeting no man as he went.