The Eavesdropper (2004)

Plot

Fifteen deaf individuals enroll in a groundbreaking clinical trial aimed at restoring their hearing. Tragically, fourteen participants quickly descend into madness, driven to suicide by the treatment's horrific side effects. Liza Raines, the lone survivor, emerges with extraordinary hearing abilities, including the capacity to perceive brainwaves. When her life is threatened, Liza must harness her newfound skill to confront those intent on erasing her existence and hiding the dark truths of the experiment. As she navigates this perilous situation, the stakes grow ever higher for Liza in a world that wants to silence her.