Interrogate Ethereal.png

Interrogate Ethereal is a research project in XCOM: Enemy Unknown.

In-Game Description[]


We know this captive is harboring an incredible pool of psionic energy, a fact that is not lost on our staff, who are quite concerned about working in close proximity to the creature. In any case, we have no choice but to conduct a thorough interrogation of the subject if we hope to gain anything of value from it.

Project Report[]

Codename: Rosetta

This creature, clearly a member of the alien leadership caste responsible for this invasion, presented us with an extremely risky and difficult interrogation prospect. Despite our previous experience in safeguarding the facility from the potential effects of the...abilities... exhibited by the psionic alien species, this captive's power exceeded the previously established limits of our testing.

Much of the information we were able to discern from this creature was cryptic at best, as it made every effort to resist even our most invasive procedures during the interrogation. However, the experimental imaging equipment we had been using to monitor the alien's brain activity did reveal a very unusual pattern of neural activity that we believe is closely tied to the creature's "power." This information should prove useful in reducing the time required for our research in a variety of fields.

Project Requirements[]

Ethereal Captive.png

PrerequisitesAlien Containment facility
Research Point Cost: 120 Points
Project Cost: Captive Ethereal

Research Credit Unlocked[]



  • The Project Codename, Rosetta, is a reference to the Rosetta Stone, which allowed for the first translations of ancient Egyptian hieroglyphs.
  • This research project shares the same codename as the Sectoid Commander Autopsy.