Fifty Shades Freed, the third book in the series, completes the journey the two main characters went through.
The stakes are higher as there is a physically violent threat (Jack Hyde breaking in, kidnapping Mia, shooting Anastasia) as well as a more passive one (Elena Lincoln's presence in Christian's life and his turning to her in moments of tension of his relationship with Anastasia). While the main characters adapt to their life as newlyweds, they have to overcome obstacles in the form of Jack's seeking revenge over "not getting" Christian's life, Christian's struggles with letting go of the dominance he was used to having in his relationships, and Anastasia's coming into her own self and becoming grounded and secure in her own skin.
The secondary characters also see their storylines progressing as Kate (Anastasia's best friend) and Elliot Grey get engaged, and Mia starts a relationship with Kate's brother.
While the unexpected pregnancy leads to what is arguably the most tense moment in Anastasia and Christian's relationship, its fallout (his reaching out to Elena and Anastasia's subsequent confrontation), shows exactly how much Anastasia has grown and how she is willing to stand up to her husband, no matter how much she loves him. The moment also leads to Christian's revealing his most vulnerable side as he expresses his fears and anxieties, and it is all resolved after Anastasia thwarts Jack's plan, putting her life on the line to save Mia.
The story of Anastasia Steele and Christian Grey ends on a happy note, as she is shown in the prologue pregnant with her second child and they are both happy and satisfied with the life they have built together.
