Darth Sedriss' holocron

 was a made by the, Darth Sedriss sometime prior to her death in.

Contents
The holocron detailed the life and philosophies of many ancient Sith Lords such as, , , and. It also contained information on, and the several forbidden Force powers. Darth Sedriss lastly implanted the device with a lightsaber crystal she herself had used back in her days as a Sith. It was through this device that Darth Judicar learned much about the Sith prior to his time.