[all parts where you just hear static are marked with ---'s]

when you return the first page:
Who are you --- You must help me please - bring a red page --- I can't --- I can't see you --- hear me --- I need a red page, you must bring me a red page --- Please bring --- beg of you, bring the page --- help me --- I am Sirrus --- given up long ago --- there is one thing I need to be rescued --- you must ---
 

when you return the second page:
You've returned! --- Thank you for bringing the red page. --- You must continue to help me! --- My name is Sirrus --- Release me --- I beg you to find the remaining red pages. You must release me --- release me from this book which has become --- Bring --- red page --- I need more red pages, please --- I beg --- don't waste time looking --- don't --- my brother --- my brother is guilty --- and I wrongfully imprisoned --- bring the red page to me!
 

when you return the third page:
Ah, you have returned --- additional --- page --- free from my prison on this forgotten island of Myst. --- I see that you are --- I am called Sirrus, for --- I need all of the red pages. I need --- You must search --- bring --- two more of the red pages --- I am released, I promise you --- warn you, don't touch the blue pages --- that is where my --- for my wicked brother, Achenar. --- He is a man of distorted mind and senses. He disgusts me. --- Do not release Achenar --- thirst for destruction is not --- neverending --- bring the red pages --- I beg you. --- please release me from this prison. I promise you will be greatly rewarded --- you must help me --- beg you to help me.
 

when you return the fourth page:
With each page I can see you more clearly. Soon --- free from this horrid prison; this book! You must visit the one remaining age --- which you have not --- confident that the --- clear to you that my brother, Achenar, is demented. He is guilty --- took advantage of the freedom our father had given us. --- Achenar began to --- conquest --- I ask you again --- do not retrieve the blue pages --- he will destroy both myself and you, just as he destroyed the other ages of Myst. --- never will escape --- To release me you must simply bring the --- red page. --- the story that I --- your wisdom --- you will see that I am innocent and he is guilty. --- this forgotten Island long ago --- I will owe you my life, and you will be greatly rewarded.
 

when you return the fifth page:
Ah... You've finally returned. I owe you a debt of gratitude, for you have nearly released me. My name is Sirrus. I trust that, from your explorations, you've become convinced that my wicked brother, Achenar, is guilty and I am innocent. It is I who am wrongly imprisoned here; imprisoned by my father.
 

I don't know who you are or how you came to this island, but I assume you must at least know something of the books. It was father who was a master of the books. He wrote hundreds of them, all describing and linking to the fantastic places and ages he had discovered. The room in which you now stand was our father's library. It was here, in this room, on this island named Myst, that he housed most of these books.

But such a waste. --- By now you have surely already discovered that Achenar has burnt and mutilated most of these books. Why?

Our father was always watchful of our exploration. We grew up under his strict supervision. But when we came of age, he gave us unbridled access to the Myst books. He began to leave our adventures more and more unchecked. Unsupervised as we were, my brother began to become disturbed. He began to take more from the Myst Ages than he had given. Soon he gained a twisted pleasure from the conquest and destruction of the other ages. It was horrific... this thirst for the destruction. But alas, even I discovered his insanity too late. He had completely destroyed all the Myst ages but four.

I wasted no time in warning my father. I thought he would recognize Achenar's guilt. But in a fit of rage he imprisoned both my brother and myself within the pages of these books, designed to hold us until he could judge which of us was guilty.

To discover the truth, our father embarked on one final journey. However, he has never returned. I can only assume that he perished along the way, leaving me, an innocent victim, entrapped forever. --- But now you are here to release me. Listen carefully. You must find one more page and I will be forever free. There is a book on the shelves in this library which is mostly burnt but has a few pages still intact. It is the last book on the middle shelf. Find it.

This book is filled with a variety of patterns. Find pattern 158, and recrate it on the door of the fireplace. This will bring you to the last red page. Bring that page to me and I will finally be released, and be able to reward you, of course.

Ignore the blue page. That page finishes my brother's book. It chills me to even think what would happen if you were to release him. --- There is another warning. Where the red and blue pages reside, also resides a green book. If you touch the green book you will also be imprisoned forever. Our father gave us this same warning long ago. I suggest you follow his advice.

Go now. Soon we will meet face to face.
 

if you come back without the final page:
You don't yet have the final page. You must not have understood my directions. Find pattern 158 in the last book on the middle shelf. Enter it into the fireplace. And bring the red page to me. Hurry! And don't touch the blue page or the green book.
 

when you bring back the final page:
(linking sound) Oh, yes! I'm free! Oh, thank you, my friend! My dear friend! You've done the right thing. You stupid fool! (laughter) It looks like perhaps you're in the book now. (laughter) And what have we here? A page. (Sirrus rips out a page and laughs) Oh, no! (more laughter) I hope you enjoy your new home as much as I enjoyed it. (rips out another page) There. I can't see you. You're getting less clear. --- I hope you're into books. (laughs as he rips out another page) Oh! (laughter) The Library's just the same as I left it. Oh, Achenar... (rips out another page) --- Goodbye. --- (he rips out another page and the screen fades into static)