Myst: The Book of Atrus was the first book in the Myst novel series. The novel first started as a rough draft in 1994 written by Ryan Miller and then later reworked several times before being released and published in 1995, with the final draft being written by David Wingrove. Because this was the first book to be written, it is often considered the first in the series although it should be known that if the series was reviewed chronologically, it is actually the second with the first being Myst: The Book of Ti'ana.
This book is the first that provides direct background information on the main characters of the Myst franchise, namely Atrus and Catherine. The novel starts with Atrus' birth and continues to follow his life as he grows up under the guardianship and guidance of his grandmother Anna who teaches him the tales and language of the D'ni before finally being retrieved by Gehn.
After returning with Gehn back to the underground cavern of D'ni, Atrus is taught the Art of Writing and the book proceeds to follow his first Ages up until he travels to his father's Fifth Age, also known as Riven, where he meets his future wife Catherine.
The novel ends by setting the stage for the rest of the series by setting Atrus and Catherine free and living on the Age of Myst and Gehn now trapped on the Age of Riven. The Myst Linking Book has been thrown into the Star Fissure towards Earth. The closing words of the book are also the opening words of the first Myst game.