Too Many Heartless Murderers Get Away with It

Joni E. Johnston, Psy. D.
5 min readMar 21, 2022

After Thirty-Four Years and a Relentless Investigation, Diane Dahn’s Son Knows Who Killed His Mom

copyright free, courtesy of San Diego County Sheriff’s office

Think about this for a moment. There are hundreds of people who took someone’s life twenty, twenty-five, thirty years ago and have spent every day since then enjoying their own. Maybe a few have been tortured by what they’ve done. But I’ve evaluated enough perpetrators to know that there…

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Joni E. Johnston, Psy. D.

Forensic psychologist/private investigator//author of serial killer book. Passionate about victim’s rights, the psychology of true crime, and criminal justice.