A Romantic Ghost

Those ghost chasing reality shows are still quite popular.  If they last and are still the rage until the Enterprise D's launch and space faring era, maybe Dr. Crusher could be a consultant for them in both the romantic arena and the paranormal.

In the seventh season episode, Sub Rosa, Crusher (Gates McFadden) gets quite the ghostly encounter. Writer Jeri Taylor, a producer on TNG, and writer for the tale calls it a 'romance novel in space.'  It certainly qualifies as such, but it also ranks as the most direct parallel to a ghost story ever to appear in Star Trek.  Dr. Crusher gives the eulogy at her grandmother's funeral, only to later be obsessed with quitting Starfleet and taking up residence in her Nana's house.  Is this the end of Dr. Crusher's tenure on Captain Picard's starship?

Captain Picard must approve his Chief Medical Officer's resignation, but he still worries for her, and for good reason. A mystery man known as Ronin, who romanced Crusher's Nana, has now set his romantic sights on Dr. Crusher. Turns out Ronin is a creature composed of 'anaphasic energy' - yet another parasitic lifeform who feeds on humans; here, by possessing a person's body and using them as a host and feeding vessel. In the end, Crusher is forced to destroy the charismatic creature, but realizes its romantic embrace brought great happiness to much of her family - including herself.