The primary twist in the Netflix series Obsession revolves around the unexpected identity of the person who uncovers and ultimately exposes the illicit affair between William and Anna.
Unveiling the Unexpected Culprit
While the narrative initially misdirects viewers, the true revelation adds a compelling layer of drama and consequence to the clandestine relationship.
The Initial Suspect
Early in the series, it might appear that Anna's friend, Peggy, could be the individual who discovers or contributes to the exposure of the affair. This assumption is natural, as Anna confides in Peggy about her secret relationship with William, making Peggy seem like a likely candidate to become involved or inadvertently reveal the truth.
The Shocking Revelation
However, the significant twist reveals that the person who grows suspicious and ultimately becomes aware of the affair is none other than William and Ingrid's own daughter, Sally. This revelation shifts the core of the conflict from an external threat to an internal, familial betrayal.
Sally's discovery is not accidental but rather the result of her growing unease and direct evidence:
- Discovery of Diary Pages: Sally's suspicions are solidified when she finds several pages from Anna's private diary in her father's jacket.
- Catalyst for Truth: This tangible evidence acts as the crucial piece that leads Sally to understand the depth of her father's infidelity, setting the stage for the dramatic consequences that follow.
The twist transforms the dynamic, making the consequences of the affair intensely personal and deeply impactful on the family unit, particularly through the eyes of William and Ingrid's daughter.