Harassment hunter

"The sound of footsteps approaching the corpse. They are the feet of a person wearing black shoes and black pants. He stands quietly at the head of the corpse, so that the dead man's head is between his feet. After a few moments of silence, he takes something out of his pants pocket. Seconds later, he extends his left hand - which is covered by his black leather glove - with a picture of a smiling little girl with a blue background, the kind of picture we are accustomed to seeing on the walls of old photo shops. A light smile and a simple background. It seems to be a picture that has passed for years and years, its colors have faded and cracked. "its limbs."
The novel tells the story of a killer who specializes in hunting child molesters in exchange for financial returns after his daughter disappears under mysterious circumstances. However, he finds himself involved in a dangerous mission that threatens his life, but it reveals to him a secret that he did not expect.