Apple TV Plus' original horror series Servant came to a shocking conclusion at the end of season 4, and true to form, the mind-bending series finale only left more questions and surprising twists. Created by Tony Basgallop, and produced by twist-master M. Night Shyamalan, Servant follows the Turner family as they hire a mysterious nanny to take care of the reborn doll that serves as a stand-in for the recently deceased infant son, Jericho. Blending Shyamalan's unique penchant for psychological twists with rising tension, the series kept viewers on the hook for four seasons as it began incorporating elements of the occult and supernatural horror.

https://screenrant.com/servant-tv-series-season-4-ending-explained/