Gavin belongs to Heather’s adoptive family. The Millers’ place in her history becomes important as the inheritance exposes the difference between what she was told and her connection to the Sawyers.
Continuity matters
A direct continuation of the 1974 premise that sets aside the earlier sequel chain. Leatherface (2017) supplies a prequel within this Sawyer-oriented branch. The film’s age and date implications are not fully tidy.