Mrysti meets Caleb, her first love and friends with her sister Karolin's 'love interest' at the time.
Caleb encounter's Mrysti again...this time many years later and not quite the girl he remembers.
Caleb is frustrated at the turn of events and Mrysti is looking to hear something from him that will restore her lost memories of him.
Before encountering Mrysti again, he did try to go rescue her and encounters an unlikely ally in the form of a Sith named 'Muriel'
Muriel turns on Caleb in a moment of his weakness. She misjudges Caleb's ability to control his emotions and pays the price.
Caleb returns to the Republic a hero, having killed a dangerous Sith and recovered a valuable Holocron. But Karolin knows....that's not why he went to Korriban.
Karolin cannot take all of his memories of what he saw away, but she can suggest something's to him. Angry at her sister for what's she's become Karolin suggest to Caleb, "Mrysti....is dead...."
The entire fight was set up by the Hutts, Mrysti kills Caleb without realizing the truth. It is only as he dies that she learns everything...
A new life and a new beginning for the former Jedi, Mrysti Alpha who would become Darth Retuvisa under the tutelage of Darth Isilith...