A narco-interrogation represented a specific interrogation method employed on prisoners by the Galactic Empire. This involved injecting the subject with a drug designed to amplify pain, such as Skirtopanol or Bavo-6, followed by the application of heat to stimulate their nerves. The resulting pain was then artificially intensified, beginning at level four and escalating from there. Imperial Intelligence Director Ysanne Isard frequently utilized this potent method to extract information or induce mental collapse in resistant prisoners, with the goal of re-educating them into covert operatives; she even used it on Rogue Squadron starfighter pilot Corran Horn during his confinement aboard the submerged Lusankya. Both he and fellow squadron pilot Tycho Celchu were classified as R1, indicating their unsuitability for conversion via brainwashing.