Watch The Stepdaughter (2024) online

As soon as 17-year-old Sarah is taken in by her estranged father and his new family, she immediately sets her plan in motion. She puts on a facade of innocence and charm, winning over her father and stepmother, but secretly plotting her revenge.
Sarah's stepmother, Lisa, is a successful businesswoman who had been a close friend of Sarah's late mother. Sarah blames Lisa for her mother's death, believing she was responsible for the stress that led to her untimely passing. Fuelled by grief and anger, Sarah is determined to make Lisa pay.
Slowly but surely, Sarah begins to manipulate her way into the family, planting seeds of doubt and suspicion between her father and Lisa. She befriends her stepbrothers, gaining their trust and using them as unwitting pawns in her game.
As Sarah's schemes escalate, her actions become more reckless and dangerous. She sabotages Lisa's work projects, plants incriminating evidence, and spreads rumors to tarnish Lisa's reputation.
But as Sarah's vendetta reaches its climax, she starts to realize the true cost of her actions. Her father's love and acceptance begin to waver as he uncovers the truth behind Sarah's manipulations. And her stepbrothers, whom she had grown to care for, are caught in the crossfire of her vengeful mission.
In a stunning twist of fate, Sarah is forced to confront the consequences of her actions and decide whether her thirst for revenge is worth destroying the very family she had sought to protect.
In the end, Sarah must come to terms with her grief and anger, and find a way to heal and move forward from the past. The Stepdaughter is a chilling tale of betrayal, vengeance, and ultimately, redemption.