Morgan is a bioengineered being made from synthetic DNA, a lab-grown creature that looks like a delicate teenage girl.
The violent misbehavior draws corporate fixer Lee Weathers (Kate Mara) to the secret lab where Morgan was made — an underground bunker in the middle of nowhere — to assess the experiment's ongoing viability.
Though Michelle Yeoh and Toby Jones co-star as Morgan's creators, and Paul Giamatti makes a memorable if brief appearance as a psychiatrist who examines the "hybrid biological organism," Taylor-Joy steals her every scene.
Both actresses deliver, though, in their spectacular fight scenes.
Weathers and Morgan are much stronger than their tiny frames would suggest, and it's exciting to see two petite women executing the kind of fight choreography usually reserved for big male superheroes.
Morgan," a 20th Century Fox release, is rated R by the Motion Picture Association of America for "brutal violence and some language.
