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Jerec rips information on the Valley of the Jedi from Qu Rahn's mind.

Drain Knowledge was a dark side ability used to extract knowledge out of a sentient without his or her consent.

Beyond simple reading of thoughts, the Drain Knowledge ability disrupted the Force to steal deep memories and information in a violent and merciless way. Such a process might damage the subject psychologically.

• Revan used this power on The One, in order to learn Rakatan during his initial search for the Star Forge. ^[1]
• Kreia used this power on Atton Rand to learn of his mysterious past in order to blackmail him.
• Darth Vader used this ability against Luke Skywalker during their second duel to learn that he had a twin sister.^[2]
• Jerec used this ability against Qu Rahn, learning that the location of the Valley of the Jedi rested with the dead Morgan Katarn.^[3]
• Kyp Durron (while under the influence of Exar Kun) may have used this ability to rip or otherwise remove scientific knowledge (pertaining to the Sun Crusher) from the mind of Qwi Xux.^[4]
• Jacen Solo used it on former Queen Mother Ta'a Chume to find out if she had dealings with the Dark Nest to kill his child, Allana. His use resulted in permanent brain damage, leaving Ta'a Chume comatose.^[5]
• Darth Talon may have used this ability to extract information on Princess Marasiah Fel from Imperial Knight Elke Vetter.

Appearances

• Precipice
• Star Wars Episode VI: Return of the Jedi
• Jedi Knight: Dark Forces II
• Jedi Academy Trilogy
• Dark Nest III: The Swarm War
• Star Wars: Knights of the Old Republic (Mentioned only)
• Star Wars: Knights of the Old Republic II: The Sith Lords

Sources

• The Dark Side Sourcebook
• Threats of the Galaxy

Notes and references