Investigations and Case Management
A supervisor's job in investigations is triage, quality control, and case momentum. Distinguish the preliminary investigation - scene protection, evidence collection, victim and witness identification, canvass, BOLO, initial report - from the follow-up investigation assigned afterward. Know solvability factors (witness availability, identifiable suspect, physical evidence, vehicle information, traceable property) that justify continued investment, and case-screening practices that close dead ends honestly rather than leaving files open indefinitely.
Evidence integrity is the single most litigated supervisory failure. Chain of custody must be unbroken, documented at every transfer, and sealed and labeled properly; biological and digital evidence have specific packaging and timeliness requirements. Digital evidence - video, phone records, social media - must be preserved by written request and logged, not merely viewed.
Investigative plan components: theory of the case, elements to prove, witnesses to interview, records and warrants needed, forensic submissions, and a timeline. Supervisors coordinate with the county prosecutor on indictable matters, grand jury presentations, search warrant review, and charging decisions. Discovery obligations are ongoing; Brady material must be identified and disclosed, and officer credibility issues (Giglio) must be surfaced early, not discovered at trial.
Know the specialty frameworks: domestic violence under the Prevention of Domestic Violence Act (arrest decision-making, temporary and final restraining orders, weapons seizure), missing persons, sex offenses, death investigations, juvenile matters with confidentiality limits, and Megan's Law registration.
Traps: a case is not "solved" because an arrest was made - clearance requires documentation; a chain-of-custody gap is fatal even if the evidence is genuine; supplements written weeks later are weaker than same-day documentation.
Rule of thumb: a stranger should be able to pick up the file and continue the investigation. Organized, indexed, chronological, with a running supplement.