Samhain, the spirit of Halloween, finds a way to break out of the containment unit and begin his reign of Halloween terror on the world once again. But, this time, the Ghostbusters are nowhere nearby to oppose him as they return home from their adventure at the Earth’s core. Confronted by goblins in the air and hit with the realization that next week is Halloween, the Ghostbusters put the pedal to the medal to get home quickly. When they arrive, however, they’re in for a surprise to find the city mutated with an army of the undead, and their friends in the clutches of Samhain!
This issue features the first and only appearance of Louis Tully in the regular comic series. He also appears in the Ghostbusters 2 adapatation mini-series.
Samhain first appeared in the episode "When Halloween Was Forever".
The title of this story is a play on the song "Some Enchanted Evening" from the South Pacific soundtrack.