| A | B |
| chain of custody | the documented and unbroken transfer of evidence |
| circumstantial evidence | evidence used to imply a fact, but not prove it directly |
| class evidence | material that connects an individual or thing to a certain group |
| crime-scene investigation | a multidisciplinary approach in which scientific and legal professionals work together to solve crimes |
| crime-scene reconstruction | a hypothesis of the sequence of events from before the crime was committed through its commission |
| direct evidence | evidence that proves an alleged fact, such as an eyewitness account of a crime |
| first responder | the first police officer to arrive at a crime scene |
| individual evidence | a kind of evidence that identifies a particular person or thing |
| primary crime scene | the location where the crime took place |
| secondary crime scene | a location other than the primary crime scene, but that is in some way related to the crime, where evidence is found |
| trace evidence | small, but measurable amounts of physical or biological material found at a crime scene |