NCIS Season 8 Episode 21 : Dead Reflection
The Major Case Response Team investigates a murder in the Pentagon that was caught on camera. Complications arise when the killer himself is found dead in an apparent car accident, but Ducky claims it was impossible for him to have committed the murder that was caught on tape as he died two days earlier; eventually the team discovers the real killer was using an advanced silicone mask to impersonate the deceased so he could tamper with evidence implicating him in a botched special forces mission. Meanwhile, after trying to figure out the mystery of the eye from "Two-Faced", E.J. and Palmer discover that the eye from the previous episode can open MTAC when scanned, leaving everyone including Gibbs and the team shocked at the revelation.