In a bustling city filled with secrets and shadows, a doctor specialized in criminology, who has managed to redeem himself after a life of mistakes, finds himself caught in an enigma that will test his wit and skills. Having left his murky past behind and with the intention of helping others, he receives an anonymous letter urging him to investigate a series of mysterious murders. As he delves into the case, he discovers that the victims are connected by dark threads that reveal an ancient conflict between a powerful local magnate and a group of desperate individuals.
As the pieces of the puzzle begin to fit together, our protagonist finds himself grappling with old ghosts and enemies he thought he had buried forever. With the help of a cunning journalist and a couple of unlikely friends, they follow leads that take them from elegant mansions to the darkest corners of the city, through underground bars and jazz clubs.
With every step they take, the tension mounts and the dangers multiply. The doctor must not only uncover the killer before another victim is claimed, but he must also confront the truth about his own past and the redemption he has sought. In a final twist filled with surprises, it will be revealed that sometimes, crime can be the only way to find the truth.