NCIS Season 23 just raised the stakes with one of its most suspenseful cliffhangers yet—and fans finally have their first clue about the mysterious “Edna.”
Episode 17, “Reboot,” shifted the action into a rare overnight lockdown at NCIS headquarters, where Kasie supervised a critical system upgrade. But the operation quickly turned deadly when a tech specialist was murdered and the team discovered a covert cyberattack unfolding inside their own walls.
By the episode’s final moments, Kasie revealed the shocking truth: Edna wasn’t a person—it was something stolen from the system.
Now, the promo for Episode 18 confirms Edna is a secret program created by Kasie herself, one valuable enough to spark blackmail, murder, and a high-level conspiracy. With Parker, Sam, and Jimmy already pulled into the investigation, the team faces a growing threat that could extend far beyond headquarters—and possibly endanger national security itself.