Spoiler Alert: This post contains spoilers for The Perfect Couple.

Everything is not what it seems in the wealthy Winbury family of Netflix’s The Perfect Couple.

Their Nantucket home is pretty much the only idyllic thing about them, viewers will learn in the six episodes of the series, directed by Susanne Bier and adapted from Elin Hilderbrand’s novel by Jenna Lamia. Several key changes — big and small — take the show in a different direction than Hilderbrand’s book.

For name changes, entirely new characters and other different plot points in the show vs. the book, read more below:

Name Changes

Eve Hewson’s bride-to-be, Amelia Sacks in the show, is named Celeste Otis in the books. Isabelle Adjani’s French family friend Isabel Nallet also goes by a different name in the novel — Featherleigh Dale, and she is from London in the book, not France. Gosia, the Winbury’s housekeeper,...