A cold case murder involving Baby John has taken a new turn after DNA evidence identified a couple linked to gardaí, according to a recent book. The investigation, conducted four decades after the child's disappearance, used advanced DNA technology to trace possible parentage. Gardaí have now allegedly connected the couple to the case, raising new questions about the circumstances of the child's fate. The book claims the couple were identified as potential parents, though no official confirmation has been made. The case remains unsolved, with authorities still investigating the role of the gardaí in the disappearance. The new findings have sparked renewed interest in the case, but no further details have been released.