Paul Holes (@PaulHoles) is a former investigator known for his contributions to solving the Golden State Killer case using advanced methods of identification with DNA and genealogy technology, and he is the author of Unmasked: My Life Solving America's Cold Cases.

• Why do some serial killers take breaks between their murder sprees or even quit killing altogether?
• Why does it seem like there were so many serial killers in the '70s compared to today? How rare are they, really?
• What psychological toll does intimately working homicides and cold cases take on investigators?
• Why cases commonly go cold, what gets them flagged for reexamination, and how the passage of time can actually work in favor of solving them.
• What makes cold case investigators like Paul so good at noticing evidence and crime scene details others miss?
• And much more...

Full show notes and resources can be found here: jordanharbinger.com/725

Miss our conversation with the American photographer who survived seven months under captivity by Al-Qaeda? Catch up with episode 217: Matthew Schrier | How to Survive in a Secret Syrian Terrorist Prison here!

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