Special Agent Elizabeth "Liz" Einstein is an FBI agent that is partnered with Special Agent Miller. Einstein, like Dana Scully is a medical doctor who believes in hard scientific evidence and is a skeptic of the paranormal.
After her partner Miller approached Mulder for advice on how to communicate with a nearly dead terrorist, Mulder reached out and told her he had a way to identify the location of the sleeper cell. He asked her to procure and administer him psychedelic mushrooms. She eventually obliged but gave him placebos. (TXF: "Babylon")
- Her name is a clear nod to the theoretical physicist Albert Einstein.
- In the Blu-Ray/DVD extra documentary "Season X", Einstein's first name is given as Liz.