Just check cigarette butts on the ground in the area of where the last shot came from of the last victim.
Jmo
DexterMorgan, psychopaths are very calculating, creative, deflective, and manipulative and will fool even the most experienced homicide investigators.. Things are not always what they appear to be.. How would CSI know that the cigarette butts actually belonged to the perp?
CRIME SCENE STAGING AND ALTERATIONS
The CSI Effect on Criminal Investigations
By Vernon J. Geberth, M.S., M.P.S.
Former Commander of Bronx Homicide, New York City Police Department
Author of Practical Homicide Investigation: Tactics, Procedures, and Forensic Techniques. Fourth Edition. CRC Press, 2006
http://www.practicalhomicide.com/Research/PIMag0707.htm
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STAGING:
"Staging a scene occurs when the perpetrator purposely alters the crime scene to mislead the authorities and/or redirect the investigation. Staging is a conscious criminal action on the part of an offender to thwart an investigation.
ALTERATIONS TO THE SCENE:
The C.S.I. Effect also has contributed to an increase in crime scene alterations. Alterations include the introduction of foreign materials into the crime scene, which have nothing to do with the original event as well as the obliteration and destruction of evidence within the scene to confuse and mislead the investigation.
Gary Ridgeway, "The Green River Killer," would attempt to throw off the investigators by leaving bogus evidence. Ridgeway, who neither smoked nor chewed gum, left chewing gum and cigarette butts at dump sites. At one scene Ridgeway scattered airport motel pamphlets and car rental papers to imply that the killer was a traveling salesman to mislead authorities.