Operation: Undertow was a covert operation carried out by Imperial Intelligence on behalf of the Sith Empire sometime after the operative known as Watcher X joined Intelligence in 3664 BBY. The operation resulted in a re-evaluation of Watcher X's service, and the agent was reassigned to the Shadow Town prison district on Nar Shaddaa. Fixer Seven was involved in the operation, and he was one of the few agents who survived the mission—though he suffered intense injuries in the process.