In the wake of an attempted murder on the renowned soprano Giuseppa Fiametti, the tranquil town of B... is gripped by a whirlwind of speculation and suspicion. As rumors of the singer's enigmatic past swirl, respected physician Medizinalrat Lange embarks on an investigation to uncover the truth. Gaining Fiametti's trust, he delves into her harrowing life story, marked by a profound loss and a haunting secret. When Fiametti implicates the esteemed Kommerzienrat Bolnau shortly after the attack, Bolnau's peculiar behavior raises eyebrows, particularly those of the perceptive police president. As Lange digs deeper, he uncovers a web of deceit and betrayal, where appearances are deceptive and motives are shrouded in darkness.