Agony booth

The Agony Booth was a device in the mirror universe used by the Terran Empire's Starfleet to discipline members of the fleet for serious infractions. For the more relatively minor infractions, an agonizer was used instead. The mirror universe version of Spock called the device a most effective means of discipline. (TOS episode Mirror, Mirror).

The agony booth was first invented in the mid 22nd century by the MACO Major Malcolm Reed and Doctor Phlox on board the ISS Enterprise. Reed and Phlox first tested the device by torturing a Tellarite engineer in the device. Captain Maximilian Forrest was at first skeptical, feeling that the traditional flogging would be a better form of discipline until Phlox explained that while a person would be desensitized to flogging, the agony booth was designed so that people would not be desensitized to the pain. A number of other people were subjected to the device - including Charles Tucker, Jonathan Archer, and even Malcolm Reed. (ENT episode In a Mirror, Darkly, Part I).

In the 23rd century, the ISS Enterprise had an agony booth. After a failed attempt to assassinate Captain James T. Kirk of the primary universe, Pavel Chekov was subjected to the agony booth. Kirk came across Chekov being tortured in the agony booth. He ordered his personal guards to have Chekov released and confined to quarters. (TOS episode Mirror, Mirror).

In the continuity of the books by William Shatner, the mirror universe version of Kirk had Chekov placed back in the booth. He had the power level of the booth turned down, but left Chekov in the booth until he died thirteen days later. After Chekov died his dessicated corpse was photographed and the photo was framed. The macabre photo was hung in Tiberius' hideout in Iowa by 2375 (TOS novel Dark Victory).

In the Dark Mirror timeline, the ISS Enterprise had an agony booth as well. The security chief Deanna Troi used the device to torture Geordi LaForge. (TNG novel Dark Mirror).