Jean Monier (Daniel Auteuil) is a weary, disillusioned defence lawyer who has long avoided criminal trials. His perspective shifts when he is appointed to represent Nicolas Milik (Grégory Gadebois), a modest family man accused of murdering his wife. Despite the overwhelming evidence and the protagonist's initial cynicism, he becomes increasingly convinced of his client’s innocence. As the legal proceedings unfold, Monier risks his professional reputation and personal peace to uncover the truth, finding himself increasingly entangled in the emotional complexities of the case.

Star Auteuil pulls double duty behind the camera as well, directing this gripping French legal drama which premiered at the Cannes Film Festival to critical acclaim, particularly for the powerful chemistry between Auteuil and Grégory Gadebois. By stripping away the usual legal tropes in favour of raw human emotion, The Thread offers a sophisticated and haunting look at the weight of justice and the fragility of the truth.