"Fifteen: A Killer's Mind" | "48 Hours" Podcast (Episode 5)

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.

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