The finale of “Apples Never Fall” on Peacock fills in all the gaps left behind by the six episodes before it by pulling back the curtains of what happened to missing matriarch Joy Delaney (Annette Bening) from her own perspective.

After Joy, mother and core of the Delaney family, goes missing, her husband Stan (Sam Neill) and four children — Amy (Alison Brie), Troy (Jake Lacy), Logan (Conor Merrigan Turner) and Brooke (Essie Randles) — are forced to hash out long-simmering resentments and regrets while trying to figure out where Joy went.

The series is divided into standalone episodes through each family member’s perspective, with Stan and Joy’s episodes being the climactic final two as the mystery finally comes together.

“Getting to the Joy and Stan of it, what is true is how many of us kids ever see our parents as people? Of course, you have the kid episodes,...