Forensics: Crime Scene Detective — Fingerprint Analysis Guide

Fingerprints in Forensics: Crime Scene Detective are not automatic — you must set up lighting, find latent prints on reflective surfaces, dust them, photograph them, and lift them with adhesive tape. This guide covers the complete process from crime scene discovery to laboratory comparison.

Finding Latent Prints at the Scene

1. Set up forensic lighting equipment with the tripod.
2. Adjust the UV flashlight angle slowly across reflective surfaces.
3. Check door handles, coffee mugs, glass bottles, windows, and countertops.
4. When a print becomes visible, place an evidence marker beside it.
5. Photograph the print with lighting still active.

Dusting and Lifting

1. Apply fingerprint powder to the developed print area.
2. Use lifting tape to secure the print onto a collection card.
3. Package the lifted print in a fingerprint evidence container.
4. Transport to the lab for grid comparison analysis.

Superglue Fuming in the Laboratory

For evidence that cannot be processed at the scene, use the superglue fuming chamber in the lab. Place collected samples inside, start the fuming process, and wait for completion. Developed prints can then be compared against the fingerprint database to identify or clear suspects.

Laboratory Comparison

At the fingerprint examination station, select a grid section and compare recovered prints against all persons of interest. A match places a suspect at the scene. A non-match clears them. Both outcomes are equally important for building an accurate case.