The woman in apartment 4B is going to die tonight.

Nadia is certain of it.

She hasn't left her apartment in two years. Not since the accident. Not since the panic attacks made the outside world feel lethal. Her window is her lifeline—her way of staying connected while staying safe.

So when she begins to notice strange patterns across the street—late-night arguments, bruises, a woman silently asking for help—Nadia does what she can from a distance. She watches. She records. She calls the police.

No one believes her.

As Nadia's obsession deepens, the story she thinks she's witnessing begins to fracture. The footage doesn't line up. The details don't match.

Trapped between her fear of leaving and her certainty that someone is in danger, Nadia is forced to confront the question she's been avoiding for years:

What happens when the only safe place you have becomes the most dangerous one?

4B is a gripping psychological thriller about agoraphobia, surveillance, fear, and the cost of looking away—perfect for readers who love tense, character-driven suspense with an unreliable edge.

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