“Fear is the most honest of all emotions”: Catspaw (Original Series) vs. The Thaw (Voyager)

Star Trek explores the nature of fear, as Captain Kirk visits Planet Spirit Halloween, and Ensign Kim is tormented by a murder-clown.

“I am alone, but I will adapt”: One (Voyager) vs. Doctor’s Orders (Enterprise)

With their crewmates in stasis for the journey through a creepy space-cloud, Seven of Nine and Dr. Phlox self-isolate … and hallucinate.

“Use logic more quietly”: Empok Nor (DS9) vs. Impulse (Enterprise)

Deep Space Nine and Enterprise get in the Halloween spirit, as Garak goes all Michael Myers on an abandoned station, and T’Pol finds a zombie apocalypse on board a Vulcan ship.

“I don’t know how I’m going to enter this into the log”: Where No One Has Gone Before (TNG) vs. Threshold (Voyager)

The crew of the Enterprise go where they should never have gone in the first place … and so do the writers of Voyager.

“You’re out of your league”: Q Who (TNG) vs. Regeneration (Enterprise)

Humanity comes face to face with the dehumanizing nightmare of the Borg, for the first time … twice.

“Eyes in the dark”: Night Terrors (TNG) vs. The Haunting of Deck Twelve (Voyager)

Who says they won’t celebrate Halloween in the 24th century? Neelix tells the Borg kids a ghost story, while the crew of the Enterprise hallucinate some scary stories of their own.