is return of the living dead a sequel
The series came about as a dispute between John A. Russo and George A. Romero over how to handle sequels to their 1968 film, Night of the Living Dead. The two reached a settlement wherein Romero's sequels would be referred to as the Dead movies, and Russo's sequels would bear the suffix Living Dead. Thus, each man was able to do what he pleased with the series, while still having one another's work distinct and be considered canon. Following this decision, Russo wrote a horror novel, Return of the Living Dead, which he planned on adapting into a film script. Although the film rights were initially sold in 1979, they were passed along by several different studios and directors before finally being obtained by Tobe Hooper, for whom Russo wrote a script. Hooper dropped out of the project, though, and the script never came to fruition.
Return of the Living Dead (film series)