20/20

Hosts

• David MuirABC News anchor and 20/20 co-anchor
• Deborah RobertsABC News correspondent and 20/20 co-anchor who conducted the episode's interviews
• John QuiñonesABC News correspondent who reported and narrated the episode

Frequent guests

• Jeff Ciardi · 1 episodeAllison Feldman's boss and mentor at her medical supply sales job
• Harley Feldman · 1 episodeFather of Allison Feldman, who pushed for the case to be solved
• Hugh Lockerbie · 1 episodeScottsdale Police Department lieutenant and early investigator on the scene
• Kelly · 1 episodeOlder sister of murder victim Allison Feldman
• Ashley Holden · 1 episodeInvestigative reporter at ABC15 in Phoenix who covered the case
• John Heinzelman · 1 episodeScottsdale Police Department detective who led the Feldman murder investigation
• Charlene Carey · 1 episodeEx-wife of John Carey
• Roger Belay · 1 episodeFormer bouncer at Major McLeish's bar in Salem who testified at trial
• Rosemary Diskin · 1 episodeHamilton, Massachusetts real estate broker who survived a 2007 strangulation attack by John Carey
• James Gravel · 1 episodeYounger brother of murder victim Claire Gravel
• Joni Johnston · 1 episodeClinical and forensic psychologist who studied the case
• Detective Gill · 1 episodeRetired Massachusetts State Police detective who led the original Claire Gravel investigation; now deputy chief of police at Merrimack College

Topics

• DNA evidence
• Cold case investigations
• Polygraph
• Capital punishment
• Police interrogation techniques
• Surveillance video evidence
• Combined DNA Index System
• Grief
• Federal Bureau of Investigation
• False confession
• Plea bargaining
• Order of protection
• Arizona Burn Foundation
• Inevitable discovery doctrine
• Arizona Supreme Court DNA suppression ruling

Recently covered

• 
  Home Alone

  Oct 3, 2026 · 1 h 26 min

  John Quiñones reports on the 2015 murder of Allison Feldman in Scottsdale, solved through Arizona's first use of familial DNA and contested in court.

• 
  The Salem Strangler

  Sep 26, 2026 · 1 h 27 min

  20/20 recounts the 1986 strangling of Salem State student Claire Gravel and how a similar 2007 attack and DNA led to John Carey's conviction.

• 
  True Crime Vault: The Accused

  Sep 22, 2026 · 1 h 24 min

  David Muir revisits the 2004 murder of three-year-old Riley Fox, her father's coerced false confession, his DNA exoneration, and the FBI's identification of killer Scott Eby.

• 
  First Comes Love, Then Comes Murder (Rebroadcast)

  Jul 25, 2026 · 1 h 23 min

  20/20 recounts the 2001 murder of Leslie Prier in Chevy Chase, Maryland, solved 23 years later when genetic genealogy and an airport DNA sting identified her daughter's ex-boyfriend.

• 
  Where Are You Jacob?

  Jul 18, 2026 · 1 h 27 min

  Deborah Roberts revisits the 1989 abduction of 11-year-old Jacob Wetterling with his parents, survivor Jared Scheierl, blogger Joy Baker and investigators who ultimately identified Danny Heinrich.

All episodes

Every episode in the show’s feed. Linked episodes are in the encyclopedia; request any other and you’ll be notified when its entry is ready.