After some arboretum visits Dr. Crusher diagnoses nothing serious, but soon dozens of crew members get behavioral deviations, affecting appetite, memory and emotions. Reg Barclay takes care of Data's cat Spot, who is pregnant like nurse Alyssa Ogawa. Worf first fails testing or diagnosing his new guidance system, so Picard and Data chase a lost torpedo, then bites Deana and turns into an erratic beast due to a bite a sprays venom himself. By the time Picard and Data return, everyone aboard seems mutating and/or molested: the Enterprise has become a 'de-evolution zoo', Data believes by a virus reviving dormant genes from ancestral species. Picard is also infected, causing growing prey-anxiety. Nevertheless he must lure monstrous Worf away so Data can develop a retrovirus from genetic material after finding Spot's kittens remained perfectly feline when ma turned iguana. Written by
Did You Know?
The only TNG episode directed by a female cast member, namely Gates McFadden
. The main reason Beverly's out of action for much of the episode was so she could devote more time to directing, like when Jonathan Frakes
first started directing back in the third season. See more
When Picard and Data find Troi in her quarters and Data scans her, he tells Picard that "she is no longer human", but Troi never was entirely human; she's half-Betazoid, which is why she's got some degree of ESP. Knowing how exacting and technical-minded Data is, it doesn't make sense for him to say this line as if Troi is a normal human. See more
Doctor! My capillaries are shrinking!
Star Trek: The Next Generation End Credits
Composed by Jerry Goldsmith
and Alexander Courage See more