Criminal Investigation Course

Lesson 1 • Legal Authority and Investigator Powers

Defines the legal basis for investigative authority, including arrest, search, and seizure powers. Links authority limits to admissibility of evidence.

Lesson 2 • Overview of the Investigative Process

Maps the end-to-end investigative cycle from initial report to case closure. Orients students to the workflow that subsequent chapters develop in depth.

Lesson 3 • History and Purpose of Investigation

Traces the evolution of criminal investigation from informal inquiry to structured profession. Provides context for modern standards and institutional roles.

Lesson 1 • Scene Reconstruction Principles

Applies spatial and temporal analysis to determine the sequence of events at a scene. Reconstruction findings guide investigative theory development.

Lesson 2 • Special Scene Environments

Addresses unique challenges in outdoor, underwater, fire, and mass-casualty scenes. Adapts standard protocols to non-standard conditions.

Lesson 3 • Scene Documentation Techniques

Teaches systematic photography, sketching, and note-taking to create a permanent scene record. Documentation supports reconstruction and courtroom presentation.

Lesson 4 • Evidence Recognition and Collection

Identifies categories of physical evidence and proper collection protocols for each. Correct collection prevents contamination and preserves evidentiary value.

Lesson 1 • Evidence Storage and Security

Covers property room operations, environmental controls, and access restrictions. Proper storage prevents degradation and unauthorized access.

Lesson 2 • Forensic Submission and Lab Coordination

Guides submission of evidence to forensic laboratories and interpretation of returned reports. Effective coordination accelerates case timelines.

Lesson 3 • Chain of Custody Procedures

Establishes documentation requirements for every transfer and storage event in an item's lifecycle. Unbroken custody is essential for admissibility.

Lesson 4 • Evidence Presentation in Court

Prepares investigators to authenticate and present physical evidence during testimony. Courtroom credibility depends on meticulous prior documentation.

Lesson 1 • Witness and Victim Interview Methods

Applies cognitive and structured interview techniques to maximize accurate recall. Victim-centered approaches reduce trauma and improve cooperation.

Lesson 2 • Suspect Interrogation Strategies

Examines lawful interrogation frameworks designed to elicit truthful admissions. Emphasizes rights advisements and voluntariness requirements.

Lesson 3 • Detecting Deception

Reviews scientific and behavioral indicators of deception and their reliability limits. Investigators apply findings cautiously to avoid false conclusions.

Lesson 4 • Special Population Interviews

Adapts interview techniques for children, elderly individuals, and persons with cognitive impairments. Specialized approaches protect reliability and subject welfare.

Lesson 1 • Fingerprint and Impression Evidence

Teaches latent print development, comparison, and classification alongside footwear and tire impressions. Impression evidence links suspects to scenes.

Lesson 2 • Forensic Biology and DNA Analysis

Covers biological evidence types, DNA profiling methods, and database search procedures. DNA results must be contextualized within the broader case.

Lesson 3 • Forensic Pathology and Cause of Death

Explains autopsy procedures, manner-of-death classifications, and wound interpretation. Investigators use pathology findings to confirm or challenge case theories.

Lesson 4 • Forensic Toxicology and Chemistry

Explains drug identification, poison analysis, and fire debris examination. Toxicology findings inform cause-of-death and impairment determinations.

Lesson 1 • Physical Surveillance Techniques

Covers stationary, mobile, and foot surveillance methods and counter-surveillance awareness. Effective surveillance produces actionable intelligence without detection.

Lesson 2 • Undercover Safety and Debriefing

Covers communication protocols, emergency extraction, and post-operation debriefing. Officer safety and accurate reporting are equally critical outcomes.

Lesson 3 • Legal Framework for Surveillance

Defines authorization requirements for physical and electronic surveillance. Legal compliance prevents evidence suppression and officer liability.

Lesson 4 • Electronic and Technical Surveillance

Addresses installation and monitoring of audio, video, and tracking devices. Technical surveillance extends investigative reach beyond physical observation.

Lesson 1 • Case File Preparation for Prosecution

Covers organization, indexing, and review of case files for prosecutorial handoff. A well-prepared file accelerates charging decisions and trial preparation.

Lesson 2 • Developing Investigative Theories

Applies inductive and deductive reasoning to form and test case hypotheses. Sound theory guides resource allocation and prevents tunnel vision.

Lesson 3 • Link Analysis and Intelligence Mapping

Uses visual tools to map relationships among suspects, locations, and events. Link analysis reveals patterns invisible in raw case files.

Lesson 4 • Financial Investigation Basics

Introduces asset tracing, financial record analysis, and money-flow mapping. Financial evidence corroborates motive and supports asset forfeiture actions.

Lesson 1 • Crimes Against Persons and Vulnerable Victims

Addresses sexual assault, domestic violence, and human trafficking investigations. Victim-centered protocols protect welfare and strengthen prosecutions.

Lesson 2 • Organized Crime and Gang Investigation

Examines enterprise structure, hierarchy mapping, and long-term infiltration strategies. Dismantling organizations requires sustained intelligence-driven operations.

Lesson 3 • Homicide Investigation

Covers the full homicide investigative sequence from scene response to suspect identification. Homicide cases demand the highest standard of investigative rigor.

Lesson 4 • Cybercrime Investigation

Addresses online fraud, intrusion, and exploitation offenses and their investigative requirements. Digital evidence collection must follow strict forensic protocols.