Four Days from Yesterday: Time Will Tell, Book 7 (Unabridged‪)‬

Decades after planet Earth was destroyed, the supreme race known as the Defenders has come to realize that one of their own caused the deaths of 78 trillion lives throughout the Universe. Feeling complicit in this destruction, the Defenders offer seven immortal survivors of Earth a one-time chance to change history for hundreds of planets.

A successful mission would cost these humans their immortality and erase the last 50 years of their lives on New Earth, as an alternate reality would be created.

Will these people be willing to make the sacrifice? What would a new timeline mean to them and how would they cope with it? Will good prevail or will evil win the day?