'Fool Me Once' Ends with Shocking Revelations and Arrests

Maya, the protagonist, is revealed to have killed her husband Joe, who was responsible for multiple deaths. The confrontation with Joe's family leads to her death and their arrest.

Netflix's 'Fool Me Once' ends with the revelation that Maya, the protagonist, killed her husband Joe.
Joe was responsible for multiple deaths, including his brother Andrew, his wife's sister Claire, and a yacht captain.
Maya confronts Joe's family about their involvement in the deaths and their falsification of pharmaceutical data, leading to her being shot dead by Joe's brother Neil.
The entire confrontation is livestreamed, leading to the arrest and imprisonment of Joe's family.
18 years later, Maya's daughter Lily gives birth to a baby girl, whom she names after her mother.