"Wink of an Eye" is a third season episode of the American science fiction television series, Star Trek, first broadcast on November 29, 1968, and repeated on June 24, 1969. It is episode #66, production #68, and was written by Arthur Heinemann, based on a story by Gene L. Coon (under the pen name Lee Cronin), and directed by Jud Taylor.

In the episode, normally invisible time-accelerated aliens take over the Enterprise and attempt to abduct the crew for use as "genetic stock".

Following a distress call, the Federation starship USS Enterprise arrives at the planet Scalos. Captain Kirk beams down with an away party into an advanced metropolis but can find no signs of life, except for an odd constant insect-like buzzing around them from no apparent source. Suddenly, crewman Compton disappears in front of their eyes, and Kirk orders the away team back to the Enterprise for safety. Back aboard, the ship begins to experience strange malfunctions, and Engineering reports the sudden appearance of an unknown device attached to the ship's life support systems. Kirk has the ship placed on red alert while Engineering attempts to remove the device.

While waiting, Kirk has a cup of coffee, but after drinking it, finds the bridge crew appears to have become motionless. He suddenly sees a woman, who introduces herself to him as Deela, Queen of the Scalosians. She explains that due to radiation around the planet Scalos, her people have entered a state of hyperacceleration, causing them to move faster than can be seen; this has also caused her people to become sterile. They used the distress signal to bring a ship here, planning on putting its crew into cryogenic suspension and using them to help procreate their species. She has used some of the radiation-tainted water in Kirk's coffee to bring him to this state to help them complete their plan as well as to become Deela's consort. Kirk refuses, and he is taken under guard to the other Scalosians, as well as finding that Compton is still alive, having also been hyperaccelerated, and willfully working with the Scalosians. Kirk condemns Compton's actions, and attempts to escape. In his efforts, Compton is slightly injured, but this causes his body to age rapidly and he dies, a side effect of the hyperacceleration.

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