Episode 7 - Via Negativa
Working without Scully's input, Doggett and Skinner try to avert the mysterious murder spree of a drug-induced, religious cult leader who leaves no trace of evidence at the crime scene.
Aired: December 17, 2000
Writer: Frank Spotnitz
Director: Tony Wharmby
One of my favorite Robert Patrick scenes: when he has to tell Mitch Pileggi he thinks he's asleep.