Andrew Garrett Forensic is a specialized unit within the San Francisco District Attorney's office dedicated to cold-case homicide investigations and complex forensic science. The team applies modern DNA analysis, digital reconstruction, and meticulous scene review to resolve decades-old cases.
With a focus on transparency and accountability, Andrew Garrett Forensic collaborates with victim families, community organizations, and scientific partners to ensure rigorous, ethical investigations.
| Investigation Area | Primary Focus | Key Tools | Typical Outcome |
|---|---|---|---|
| Cold-Case Homicides | Reviewing unsolved murders with new scientific methods | DNA phenotyping, digital forensics, archival records | Identifications and prosecutions where possible |
| Forensic Analysis | Validating and re-testing biological and digital evidence | STR and SNP genotyping, ballistics imaging | Objective evidence assessments for case decisions |
| Victim Advocacy | Coordinating with families for updates and context | Family liaison protocols, case dashboards | Improved trust and clearer case timelines |
| Policy Impact | Advancing standards for cold-case review | Data sharing frameworks, audits, training | More consistent, defensible case handling |
Advanced Forensic Methodologies in Cold Cases
DNA Phenotyping and Genetic Genealogy
Andrew Garrett Forensic employs cutting-edge DNA phenotyping to predict physical traits and leverages genetic genealogy to identify unknown persons of interest. These methods significantly expand identification options when traditional leads are exhausted.
Digital Reconstruction and Timeline Analysis
The unit reconstructs digital timelines using phone records, surveillance footage, and geolocation data. By aligning digital artifacts with forensic findings, investigators clarify sequences of events and narrow suspect pools.
Case Review and Collaborative Strategy
Multidisciplinary Review Panels
Each major investigation is examined by a panel including forensic scientists, prosecutors, and behavioral analysts. This structure ensures that technical evidence is interpreted alongside legal and contextual factors.
Community Partnership Protocols
Local organizations and victim advocacy groups provide contextual intelligence and historical perspective. These partnerships strengthen public trust and surface overlooked information during long-term reviews.
Impact and Accountability Metrics
Measurement and Continuous Improvement
Andrew Garrett Forensic tracks resolution rates, exonerations, and process benchmarks to refine methodologies. Public dashboards highlight progress while exposing areas for systemic improvement.
Operational Standards and Future Direction
- Adopt validated DNA and digital forensic methods aligned with accredited standards
- Maintain transparent metrics and family-facing dashboards for case progress
- Invest in ongoing training for prosecutors, detectives, and analysts
- Partner with academic institutions for method validation and innovation
- Expand data-sharing agreements while protecting privacy and civil rights
FAQ
Reader questions
How does Andrew Garrett Forensic differ from traditional cold-case units?
The unit combines advanced forensic genomics, digital reconstruction, and structured collaboration with families and scientific partners to modernize cold-case workflows.
What types of cases does the team prioritize?
High-impact homicides with unresolved identification issues, cases with new DNA technology potential, and matters where transparency and victim-family engagement are critical.
Can families request case reviews directly?
Yes, family members and victim advocates may submit detailed requests; the team evaluates them using standardized intake criteria and responds with clear next steps.
How does the unit ensure scientific and legal defensibility?
All analyses follow accredited laboratory standards, peer-review practices, and chain-of-custody protocols, with documentation designed to withstand judicial scrutiny.