The Demogorgon, which stalks Nancy in the Upside Down and is hunted by the teenagers.
Directed by the Duffer Brothers, "The Monster" serves as the rising action leading into the Season 1 finale. The episode is characterized by the literal hunt for the Demogorgon and the symbolic "monsters" found in human behavior and government secrecy. Key Plot Developments [S3E6] The Monster
Critics often highlight the episode's pervasive feeling of dread and its successful blend of disparate storylines. The Demogorgon, which stalks Nancy in the Upside
Jonathan’s "monstrous" outburst of violence against Steve, reflecting his own repressed anger. Production and Reception [S3E6] The Monster
Dr. Brenner and the Hawkins Lab staff, who are revealed to have experimented on and abducted children.