The primary role of a crime scene investigator is to meticulously collect, document, and preserve physical evidence at a crime scene to aid in the investigation and prosecution of the crime.

Fingerprint dusting is a technique used to reveal latent fingerprints on surfaces at a crime scene. It involves applying a fine powder to the surface, which adheres to the fingerprint's ridges, making them visible.

Ballistics analysis is the scientific examination of firearms, ammunition, and their components to determine their involvement in a crime. It helps identify the weapon used and link it to the crime scene or suspect.

An autopsy report provides detailed information about the cause and manner of death. It is prepared by a forensic pathologist who examines the body, collects evidence, and determines the circumstances surrounding the death.

Trace evidence analysis involves the examination and comparison of minute particles of evidence, such as fibers, hairs, soil, and glass fragments, to link them to a crime scene or suspect.

DNA profiling, also known as DNA fingerprinting, is a technique used to analyze DNA samples to identify individuals or determine genetic relationships. It is commonly used in forensic investigations to match DNA evidence to suspects or victims.

A forensic toxicologist analyzes drugs and toxins in biological samples, such as blood, urine, and tissue, to determine their presence, concentration, and potential role in a crime or death investigation.

Gas chromatography-mass spectrometry (GC-MS) is a technique used to separate and identify chemical compounds in a sample. It is commonly used in forensic science to analyze drugs, explosives, accelerants, and other substances.

Bloodstain pattern analysis is the process of examining and interpreting bloodstain patterns at a crime scene to reconstruct the events that led to the bloodstains. It can provide valuable information about the sequence of events and the actions of individuals involved.

Toolmark analysis is the scientific examination and comparison of tool marks, such as those left by a screwdriver or pry bar, at a crime scene. It helps identify the specific tool used and link it to the crime or suspect.

A forensic document examiner analyzes and authenticates documents, such as handwriting, signatures, and typewritten text, to determine their origin, authenticity, and potential alterations.

Voice analysis, also known as voice comparison, is the scientific examination and comparison of voice recordings to identify individuals or determine the authenticity of a recording. It is commonly used in forensic investigations to identify suspects or link individuals to a crime.

Digital forensics is the process of analyzing and interpreting digital evidence, such as computer files, emails, social media posts, and mobile phone data, to uncover evidence of a crime or gather intelligence.

Tire track analysis is the scientific examination and comparison of tire tracks at a crime scene to determine the make, model, and specific vehicle involved. It helps identify the vehicle used in a crime or link it to a suspect.

A forensic accountant analyzes financial records, such as bank statements, invoices, and tax returns, to uncover evidence of fraud, embezzlement, or other financial crimes.