Alison Dupuy
Montgomery County Police cold case detective
Alison Dupuy (Montgomery County Police cold case detective) has appeared as a guest on 1 episode in TMT.
Appearances
First Comes Love, Then Comes Murder (Rebroadcast)20/20 · 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.
Often appears with
- Deborah Roberts · 1 shared episode
- David Muir · 1 shared episode
- Tara Augustin · 1 shared episode
- Lauren Prier · 1 shared episode
- Brett Reedy · 1 shared episode
- Brad Bell · 1 shared episode
- John McCarthy · 1 shared episode
- Linda · 1 shared episode