Sorcerers of Darkness
The Sorcerors of Darkness as they were called, were a group of Dark Jedi who were exiled in the days of the Old Republic, led by the Sith Lord Xuin Carat, they attempted to seize control of Coruscant, their coup attempt failed resulting in their exile to the distant Pirath System in the Beta sector.
En-route to the planet Hiran, the second planet of the Pirath System their transport crashed on the Santuary Moon of Lien, having no way to leave the planet until they could repair the ship, and being close to their destination, the Dark Jedi made the decision to stay on the moon and set up a base of operations.
This base of operations would become the Cathedral of Darkness. To continue their new found order and practice the ways of the Dark Side the Sorcerors needed to recruit more followers, this meant they would need to gain access to Hiran to find those who were force sensitive. Using what they could to repair the transport the Sorcerors of Darkness spent the next 1,000 Years taking the strongest and brightest from Hiran to Lien.
After a thousand years or taking men and women from Hiran the Sorcerors just dissapeared, no one really knows what happened and there are few brave enough to venture too close lest they wake the spirits of the sorcerors.