Event Reconstruction
Definition
What happened at a discrete moment. Example: the shooter stood here, the victim was facing this way.
- Scope
- A single discrete moment in a sequence, not the full incident
- Inputs
- Bloodstain patterns, trajectory, BPA, position of victim and objects
- Distinct from
- Sequence reconstruction, which links multiple events in order
- Use
- Tests whether a witness account is physically consistent with the scene
Common questions
How does event reconstruction differ from a full crime scene reconstruction?+
A full reconstruction chains several discrete moments into a timeline. Event reconstruction stops at one moment, such as shooter position at the instant of firing, and does not claim to establish what happened before or after it.
What evidence is needed to reconstruct a single event?+
Typically bloodstain pattern analysis, projectile trajectory, and the final resting position of the body and objects. The strength of the reconstruction depends on how many independent evidence types converge on the same conclusion.
Related terms
- BPA (Blood Pattern Analysis)
- The inference of mechanism and direction from the shape, distribution and density of bloodstains. A high-yield input to reconstruction.
- Functional Reconstruction
- What an object was used for or how a mechanism operated. Example: how a firearm jam shaped the spent-cartridge distribution.
- Probative Value
- The strength of the evidence's tendency to prove or disprove a fact in issue. High probative value means the evidence substantially changes...
- Sequential Reconstruction
- The order of events across time. Example: the struggle preceded the stabbing, which preceded the move from the kitchen to the bedroom.