This research uses juridical normative method through primary data. The data derived from the literature, scientific papers and applicable legislation. Data analysis using descriptive analysis . The police in exposing the crime of murder, to find who the perpetrators, the police make fingerprints as one of the evidence for Reveal or search for who the perpetrators. Because fingerprints are the main evidence in uncovering criminal offenses. In the fingerprinting at the crime scene (crime scene) the police did not rule out the possibility of experiencing obstacles in place incident case (TKP), but the police can overcome the constraints factor, including adding infrastructure facilities and supporting infrastructure the process of fingerprint execution, attention to improving police performance in identifying. Fingerprint identification known as dactyloscopy is the science of studying fingerprint by observing the line contained in the stroke Toes and hands. This study aims to know clearly about how the implementation of fingerprints in the crime of premeditated murder in Denpasar Police. The conclusion is obtained that, in the world no human being has the same fingerprint so that the police will never be fooled by fingerprint Keywords: Investigation, Assassination, Fingerprint