-- point Crime solving for me is more complex than the challenge of the hunt, or the process of piecing together a scientific puzzle. The thought of good people suffering drives me, for better or worse, to the point of obsession. People always ask how I am able to detach from the horrors of my work. Part of it is an innate capacity to compartmentalize; the rest is experience and exposure, and I've had plenty of both. But I have always taken pride in the fact that I can keep my feelings locked up to get the job done. It's only been recently that it feels like all that suppressed darkness is beginning to seep out. When I look back at my long career, there is a lot I am proud of. I have caught some of the most notorious killers of the twenty-first century and brought justice and closure for their victims and families. I want to tell you about a lifetime solving these cold cases, from Laci Peterson to Jaycee Dugard to the Pittsburg homicides to, yes, my twenty-year-long hunt for the Golden State Killer. But a deeper question eats at me as I ask myself, at what cost? I have sacrificed relationships, joy'even fatherhood'because the pursuit of evil always came first. Did I make the right choice? It's something I grapple with every day. Yet as I stand in the spot where a young girl took her last breath, as I look into the eyes of her family, I know that, for me, there has never been a choice. 'I don't know if I can solve your case,' I whisper. 'But I promise I will do my best.' It is a promise I know I can keep.