A series of mysterious deaths aboard its ships leads a cruise line to contact the FBI as rumours of a vengeful ghost begin to fly. Is the killer striking from beyond the grave?
I do like the idea of Mulder & Scully stuck together on a cruise ship, so there may be a few more cruise ship investigations that I'll post. For scientific comparison, of course 😉
This one's set in Season 4, not long after TFWID, and poor Scully's obsessing a little too much about not being a certain person's soul mate.