"I will make you my knight in secret, since you wish it," Arthur said, "except that I must tell Sir Lancelot. He is my dearest knight, and I keep no secrets from him."
Gareth said that he would be glad to have Sir Lancelot know. Accordingly the king spoke to Sir Lancelot about Gareth.
"I have promised him that he may right the first wrong we hear of," said Arthur, "but as he has not yet proved what he can do, I want you to take a horse and follow him when he sets forth. Cover up the great lions on your shield so that he will not know who you are." Sir Lancelot agreed. Then Gareth was secretly made a knight.
That same day a beautiful young damsel came into Arthur's hall. She had cheeks as pink as apple blossoms, and very sharp eyes.
"Who are you, damsel?" asked the king, "and what do you need?"
"My name is Lynette," she said, "and I am of noble blood. I need a knight to fight for my sister Lyonors, a lady, also noble, rich, and most beautiful."
"Why must she have a knight?" questioned Arthur.
"My Lord King, she lives in Castle Perilous. Around this castle a river circles three times, and there are three passing-places, one over each circle of the river. Three knights, who are brothers, keep a constant guard over these passing-places. A fourth knight, also a brother, clad in black armor, stands guard in front of my sister's castle. We have never seen this knight's face or heard his voice, but his brothers tell us he is the most powerful and daring knight in the world. All these four keep my sister a prisoner."
"And why?"
"Because they want her to marry one of them so that they can have her great wealth. She refuses, but they say that they will have their way. In the meantime, they demand that you send Sir Lancelot to fight with them. They hope to overthrow Sir Lancelot, thus proving themselves the greatest warriors in the land. But I believe that Sir Lancelot could overthrow them; therefore, I have come for him."