The 7 S's of Crime Scene Investigation

The 7 S’s of Crime Scene Investigation The 7 S’s of Crime Scene Investigation (CSI) are a systematic approach used by police officers, crime scene investigatorsand forensic professionals to properly secure, document, search, and process a crime scene while preserving the integrity of evidence. Note: Different forensic science textbooks may use slightly different wording for the 7 S’s, especially the final step.