The Hours of Isis was Evelyn Eaton's third published book, and the first that was not a collection of poetry. It reflects the author's mystical vision, rather than a strictly accurate representation of the legend of Isis, Osiris and Horus. Many of the themes in The Hours of Isis (the search for love, the spiritual light, the understanding of the divine) recur in Evelyn Eaton's later works. This serves as an introduction to the author as well as an introduction to the legend.

Most of the original illustrations are included. As in the original, some are in black and white and some are in color.