What is the function of documenting a timeline in an investigative report?

• A. To provide a clear sequence of events and support origin and cause determination
• B. To summarize the testimony
• C. To record only the final conclusion
• D. To replace photographic evidence

Answer: (B)

Documenting a timeline in an investigative report provides the clear sequence of events and helps support origin and cause determination. By laying out when actions occurred, who performed them, and how the scene evolved over time, investigators can reconstruct how the incident unfolded, compare statements with what actually happened, and see how evidence fits together. This chronological framework makes it easier to identify inconsistencies, evaluate competing theories about ignition sources or progression, and build a defensible conclusion grounded in the order of events. The timeline isn’t just a summary of testimony, and it doesn’t replace photographic evidence; photos capture what happened at moments in time, while the timeline shows how those moments relate to one another and to the investigative reasoning.