The X Files (1993) - 1x01 - The X-Files

Special Agent Dana Scully is partnered with Special Agent Fox Mulder to validate his work on a special project called The X-Files. While he is a believer in the paranormal, fuelled by a lost memory where his sister was abducted by aliens; she is a scientist and prefers to look for rational, logical explanations.
Their first case takes them to Oregon, to investigate the unsolved murders of several High School classmates, whom "Spooky" Mulder believes have been experimented on by aliens.