A Killer's Mind

About this episode

The episode explores whether Daniel Marsh was legally insane during the murders of Claudia Maupin and Chip Northup.

Was Daniel Marsh a depraved psychopath without a conscience, or was he not in his right mind when he murdered Claudia Maupin and Chip Northup? As Daniel Marsh is tried as an adult, his defense team makes the case he was legally insane when stabbing the sleeping victims. Could his medications be responsible for his actions? But the prosecution argues Daniel knew exactly what he was doing and would have harmed others had he not been caught. It is up to the jury to decide Daniel's fate as Chip and Claudia's family watches and waits. Get early, ad-free access to episodes of Fifteen: Inside the Daniel Marsh Murders by subscribing to 48 Hours+ on Apple Podcasts. The series is widely available everywhere else you get your podcasts.

People in this episode

Host: CBS News

Topics covered

• psychopathy
• legal insanity
• murder trial
• jury decision
• mental health
• true crime

Keywords

• Daniel Marsh
• Claudia Maupin
• Chip Northup
• murder
• insanity defense
• trial
• psychopath
• jury

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• A Quiet Life Shattered · August 27, 2025 · 27 min