The X-Files, Season 2

Scully:
Sometimes when you want to believe so badly, you end up... looking too hard.

Lucy Kazdin:
I actually called you down here for another reason, Agent Mulder. Uh... in the x-rays, the surgeon found several pieces of metal. In his gums, in his sinus cavity, and one in the abdomen. I had them checked, I felt you'd want to know... and there were tiny drill holes in his left and right rear molars. A dentist who examined them said they could not have been done with any of the current equipment in use... not without chipping or damaging the tooth. Anyway... I thought you ought to know.