This is the third book in the Assassin of Light series. Zara has settled in with Jaxon, her fiance and they have planned their commitment ceremony when Jaxon is kidnapped. In the process of finding Jaxon, she and Tomar, Jaxon's part human aide, discover caves that could explain the origin of humanity of the three planets as well as Earth. Through a harrowing adventure Jaxon is rescued and she, Jaxon and Tomar find themselves in another adventure as they find proto-humans that threaten Zara's life. The last of the series is filled with adventure and seat of the pants thrills. A fitting end to a strong, beautiful intelligent female warrior as she embarks on a new life.