FBI Profiler Named in Saginaw Valley Case
Detroit Field Office credits behavioral analysis with breaking 14-month investigation
MARCH 2019
Tuscola Predator Sentenced to Life
Federal profiler's victimology read identified pattern across three counties
AUGUST 2017
State Police Confirm Remains at Deford Twp.
Sanilac County investigators decline comment on identification
FEBRUARY 2026
Two Women Recovered Alive in Northern Michigan
Off-the-books consultation attributed to former Bureau profiler
OCTOBER 2022
BAU Veteran Cited in OPR Inquiry
Hoover Building review concluded; agent declines further comment on departure
JUNE 2021
Dental Hygienist Missing on M-24
Caro woman's vehicle found running near Mayville; shoes recovered from floor mat
OCTOBER 2025
Bureau Releases NCAVC Annual Caseload Summary
Behavioral Analysis Unit logged 412 consultations across 39 states last fiscal year
JANUARY 2018
Profiler Closes Cold Case in 72 Hours
Quantico-trained agent's pattern read links three victims previously dismissed as unrelated
MAY 2020
FBI Profiler Named in Saginaw Valley Case
Detroit Field Office credits behavioral analysis with breaking 14-month investigation
MARCH 2019
LIC. PI–4471
STATE OF MICHIGAN
EXP. 12.31.2027
DRY CREEK · MIDLAND CO.
43.5897° N   84.7669° W
FMR. FBI / NCAVC
Robert Cummer · Mangrove Publishing
Jackson
Dahl
BAU · QUANTICO · 2014–2021
LICENSED PI · 2024–

I stopped using the word investigation years ago. The Bureau trained it out of me. You don't investigate a scene. You read it.

THE NOVELLA · $3.99·THE CASE FILE · INCLUDED
§ I — Case Archive
Active Files
INDEXED 04.25.2026 · 02:14 EDT
Case
001
OFF-BOOKS
Shoes Inside
FILE OPEN · 04.2026
A woman vanishes on M-24. Her car is found running, wipers on. Her shoes are still on the floor mat. Six months later, it happens again.
VICTIMOLOGY·AUTHORITY RUSE·PREDATOR DYAD
Case
002
FORTHCOMING · NO ETA
Dry Creek doesn't advertise. The next file opens when it opens.
§ II — Transmedia
The Record
Documents, field notes, commendations — and the things that don't appear in any official report. The vault opens when you find the code printed on your purchase receipt.
Enter Vault
BAY CITY TIMES · 14 MARCH 2019
FBI Profiler
Named in
Saginaw Valley Case
Detroit Field Office credits behavioral analysis with breaking 14-month investigation. Three victims recovered alive.
OPR / HOOVER BLDG.2021–██–██
NOTICE OF REFERRAL — OFFICE OF
PROFESSIONAL RESPONSIBILITY
This matter has been referred pursuant to . Agent Dahl has been notified of the pendency of this .
Sealed
FIELD NOTE · CASE 00104 · 2026
The shoes told me everything before I opened the door. Placement was deliberate. She didn't kick them off. Someone arranged them.
— DAHL, J.
Filed
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