The Better Sister Ending: Who Killed Adam? Jake’s Fate Explained

What starts as a classic domestic thriller takes a darker, more complex turn in The Better Sister’s ending. The Prime Video miniseries begins with the murder of Adam, a successful lawyer and seemingly perfect husband. As layers of the characters’ lives unfold, it becomes clear that appearances deceive.

The cliffhanger finale answers two key questions: who killed Adam, and what really happened to Jake?

Who killed Adam in The Better Sister’s ending and why?

Nicky, Chloe’s estranged sister and Adam’s ex-wife, killed Adam during a confrontation in an act of self-defense.

Her decision came after hearing from her son, Ethan, who told her that Adam had been physically assaulting Chloe. This deeply affected Nicky, who had herself survived years of abuse from Adam. He had masked his violence with lies about her supposed alcoholism.

When Nicky showed up to talk to Chloe and rescue her, Adam answered the door instead. The confrontation escalated quickly. Adam attacked Nicky, slamming her against a wall. With no way to escape, Nicky pulled a knife from her pocket and stabbed him.

Ethan arrived soon after. Believing his stepmother Chloe had killed his father, he staged the scene to look like a robbery to protect her. His actions made him a suspect, but he stayed silent to shield his family.

Later, Nicky confessed everything to Chloe. Shocked to learn that Adam had drugged her sister and manipulated their lives, Chloe decided to protect Nicky in return. She framed Adam’s associate, Bill Braddock, for the murder by planting the knife in his office. With Braddock already implicated in a massive criminal cover-up, the authorities accepted the story, and the sisters walked free.

Does Jake die in The Better Sister’s ending?

Yes, Jake dies, and The Better Sister ends with his body lying on the beach. His death remains the final mystery the series doesn’t fully resolve.

Jake had ties to both Adam’s secret FBI investigation and the criminal dealings of the Gentry Group. As pressure mounted and his fear of Agent Olivero increased, Jake began to unravel. Viewers see him grow increasingly nervous as he realizes how dangerous those around him truly are.

The show doesn’t confirm who killed Jake. It could have been someone tied to Braddock. It could have been Olivero, trying to eliminate loose ends. Or Jake, overwhelmed and afraid, may have taken his own life. Whatever the truth, Jake’s death may be explored in Season 2, if it happens.

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