On death row for 42 years at San Quentin, artist and inmate William Noguera formed an unlikely bond with the notorious serial killer Joseph Naso. Over years of disturbing conversations—and at great personal risk—Noguera gained his trust. What he revealed was far worse than anyone imagined.

Behind prison walls, Naso described his brutal crimes in chilling detail, disclosing evidence that had eluded investigators for decades and exposing the darkness that drove him. Now, for the first time, Noguera lays bare in his book, Through the Lens of a Monster, those confessions and the psychological games behind them—offering long-overdue answers for grieving families and fresh leads in cases gone cold.

Through the Lens of a Monster is both a window into the twisted mind of a predator and a haunting memoir of a man seeking redemption for his own violent past.

 My guest today on Murder Most Foul is William Noguera.