"Fear Street Part Two: 1978" is the second installment in the "Fear Street" trilogy, released on July 9, 2021, on Netflix. It follows the story of a group of teenagers at a summer camp in 1978 as they encounter a terrifying series of events linked to a curse affecting their town of Shadyside. The film delves into the backstory of the Shadyside killer and ties into the overarching narrative introduced in "Fear Street Part One: 1994." The trilogy is based on R.L. Stine's book series and explores themes of horror, friendship, and survival.

"Fear Street Part Two: 1978" has received generally positive reviews for its engaging blend of horror, nostalgia, and character development. Set in a summer camp, it pays homage to classic slasher films while expanding on the overarching story of the Fear Street trilogy. The performances, particularly from the cast portraying the teen characters, are well-received, and the film effectively builds tension and scares. Fans of the horror genre and those who enjoyed the first installment are likely to find it entertaining.

In "Fear Street Part Two: 1978," the killer is Billy Barker, a former camper at Camp Nightwing who becomes possessed by the curse of Sarah Fier. He is responsible for a brutal massacre during the summer of 1978, targeting the camp's counselors and campers. The story explores the backstory of the Shadyside curse and the events leading to the killings, revealing how Billy's actions are influenced by the dark forces tied to Sarah Fier's legacy.

No, Deena is not in "Fear Street Part Two: 1978." The film is primarily set in 1978 and focuses on the characters of Sadie Sink's Ziggy and Emily Rudd's Cindy, along with the backstory of the Shadyside curse. Deena, played by Kiana Madeira, is a main character in "Fear Street Part One: 1994" and appears in the trilogy's conclusion, "Fear Street Part Three: 1666." The second installment explores the events leading up to the cursed history of Shadyside through a different set of characters.