The X-files: 2x23

Mulder and Scully are brought onto a case by Detective Kelly Ryan, a former student of Scully’s, to investigate a series of mysterious disappearances that leave only scorch marks behind. They eventually find Dr. Chester Ray Banton, a physicist who was exposed to during a freak particle accelerator accident.

: Scully checks a heating vent for signs of Eugene Victor Tooms, the shape-shifting mutant from Season 1. The X-Files 2x23

: Vince Gilligan (his first writing credit for the series) Guest Star : Tony Shalhoub as Dr. Chester Ray Banton Plot Summary Mulder and Scully are brought onto a case

: Initially, the script allowed Banton's shadow to move independently, but this was scrapped to save on animation costs. : Scully checks a heating vent for signs

: This episode marked the beginning of Vince Gilligan's highly successful career with the show; he later created Breaking Bad and Better Call Saul .