The X-Files: Season 1, Episode 3

1 - 3: Squeeze

A former FBI Academy classmate of Scully's asks her for help on a case: Several murders have occurred where the victim's liver has been ripped out, yet there is no indication of an entry point to the place where the person had been murdered. Scully asks Mulder to assist them on the case and, despite his reputation in the Bureau, he agrees.