13 years after the occasions of The Housemaid's Secret, Millie is currently a social worker. She and Enzo, a landscaper, are family with two children - - Nico, 9, and Ada, 11.
Their flirtatious neighbor Suzette asks Enzo to help her with her backyard after they just moved into their new home.
The Housemaid is Watching
They also hire Martha, Suzette's housekeeper, to clean for them. Enzo and Suzette have a lot of time together. At the point when cash disappears from Millie and Enzo's shared service, Millie begins to think Enzo is undermining her.
Jonathan, Suzette's husband, dies with his throat cut. Enzo rejects that it was him, saying that the missing cash had to do with assisting Martha with getting away from her harmful spouse.
The police suspect Enzo since he went to at Suzette's home two hours before the incident.
They obtain a search warrant and discover Jonathan's blood-stained pocket knife at Millie's house.
It's uncovered that Ada figured out that Nico had been acting out that Mr. Lowell had been compelling him to head toward their home to "play" in a secret room.
Ada went to stand up to Mr. Lowell and when he wouldn't let her leave, she cut him with a folding knife that Enzo had given her for security.
Benito, likewise tells her that the DNA of a nearby kid who disappeared was likewise found in the Lowell home. Suzette is confronted by Millie and Benito, who try to persuade her to confess to the murder of her husband by claiming that she found out about his wrongdoing.
Suzette admits to killing her significant other. It is revealed in the epilogue that Martha, who had returned to steal a few items, actually killed Jonathan by slicing his throat, despite the fact that Ada stabbed him.