As Paul Kirk, the noted forensic science pioneer, described it, forensic science is interested in the “unlikely and the unusual” (Kirk, 1963, p. 368). This is certainly true of crime scenes: Each one is unique. The crime committed, the location, the items used, the people involved, all vary from scene to scene. Although nearly every police and forensic agency has written protocols about processing a crime scene, these may be trumped by the circumstances of the crime scene. As Barry Fisher, retired Director of the Los Angeles County Sheriff’s Department Crime Laboratory notes, “There are few absolute rules in crime scene investigations . . . . There are always cases where guidelines cannot be followed . . . . Situations demand that investigators be flexible and creative when necessary” (2004, p. 49). That is, crime scene investigators (or CSIs, for short), must know and follow their agency’s protocols but must be ready to improvise, within accepted limits, to protect and/or preserve e