The Secrets Within is the first of the trilogy of Endless Love. The second one is Timeless Love and the third is soon to come, Sands of Time. You can easily read and follow each book separately, but if you like to learn the characters and follow their lives as they build up to crescendos of love and secrets that build that leaves you to wonder - it causes you to want to read the next one - and it will give you an escape into the lives in the author's imagination. Enjoy!