Scientific Method (Star Trek: Voyager)

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"Scientific Method"
Star Trek: Voyager episode
Episode no.Season 4
Episode 7
Directed byDavid Livingston
Story bySherry Klein
Harry 'Doc' Kloor
Teleplay byLisa Klink
Featured musicJay Chattaway
Production code175
Original air dateOctober 29, 1997 (1997-10-29)
Guest appearance(s)
Episode chronology
← Previous
"The Raven"
Next →
"Year of Hell"
Star Trek: Voyager (season 4)
List of Star Trek: Voyager episodes

"Scientific Method" is the 75th episode of Star Trek: Voyager, the seventh episode of the fourth season.

The premise of the episode is that of a group of cloaked aliens performing scientific experiments on the Voyager crew, and the effect the experiments have on the various crew members. The episode explores this from a third party perspective, and views the events in a manner similar to the medical experiments humans perform on lab rats or other animals.


The crew of Voyager note that Tom Paris and B'Elanna Torres have become intimately involved, while other crew report of small maladies to the Doctor, such as Captain Janeway, who has been suffering excruciating headaches. The crew initially attribute these problems to effects of a nearby stellar phenomenon, and continue on as they appear benign.

Over a matter of hours, Chakotay is aged several decades, losing his hair and going blind. Neelix suffers spots over his body and emits a strange odor. The Doctor and Torres finds that both have had their DNA stimulated by an external force, and discovers alien writing imprinted on their nucleotides like a barcode. However, before they can run further tests, Torres is overtaken by a seizure and goes into respiratory arrest, and the Doctor's program is shut down.

Seven of Nine receives a coded transmission from the Doctor, and she meets him in a holodeck. The Doctor explains that some entity is tagging the crew's DNA to force these mutations, and that the entity has the ability to silence those that come close to the truth. He adjusts Seven's optical scanners to detect outside the normal visual range. Seven starts going about her normal routines and sees a number of aliens, previously unseen, observing many of the crew which are outfitted with strange devices. Seven tries to alert Janeway without arousing suspicion but a female alien is observing Janeway's response to sleep deprivation using needles stuck in her skull. Seven covertly goes to Engineering to arrange for an energy discharge that the Doctor thinks will disable the DNA imprints. Tuvok detects Seven's tampering and orders her to cease and desist, attracting the attention of nearby alien observers. Left with no choice, Seven uses a phaser to disrupt the nearest alien's cloaking technology, making her visible, and captures her.

Janeway accosts the alien about what they have been doing. The alien callously responds that their experiments are for medical research and could be of benefit to everyone in the galaxy. She even draws parallels to research done by humans on living rodents and primates. In exchange for their 'service', the lead researcher agrees to share whatever data they gather. Taking the Borg's favorite position, however, the researcher arrogantly states that there really isn't anything that they can do since they've learned enough about Voyager to thwart any attempts to stop them. Back on the bridge, a helmsman dies as a result of the experiments. Angered and slightly unstable, Janeway takes the helm and sets Voyager on a course to fly between binary stars at full speed. The lead alien fails to regain helm control and then threatens to kill the crew. Janeway explains that she's running an experiment of her own to see if Voyager's hull will crack if flown between the binary stars. She invites the aliens to stay and watch as there is a small chance that they won't all be killed. The aliens choose to leave and beam themselves to two cloaked ships parked on the ship's hull. Both ships detach, but only one survives the gravitational forces. Voyager barely survives its trip between the two stars. The Doctor is restored and he helps to remove the various devices and DNA imprints, returning the affected crew to normal. However, Paris and Torres, whose hormones were altered to heighten physical attraction, continue to become close friends after the affair.

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