In a sexual assault investigation the law enforcement investigator’s mental approach should be to determine if a crime was or wasn’t committed. One of the major aspects of determining if a crime was committed and by whom, is if the investigator can determine if the sexual assault which is being alleged is supported with any type of physical, biological, and medical evidence. Therefore, the law enforcement investigator must determine as soon as possible if the victim, witnesses, and the sexual offender can be linked by one another when it comes to evidence which was left on their persons or at the crime scene. The investigator has to ask the witnesses the difficult questions to try and understand that the information they have may lead them to any types of evidence. The investigator’s credibility as a law enforcement officer will be questioned if he/she have difficulty in demonstrating their search for evidence was thorough, complete, and intelligent. The credibility and reliability of the investigator’s reasoning and logic may be called into question which may then allow a sexual offender to be released back into the community and/or an innocent person can be sent to jail/prison for a crime he/she didn’t commit. In this video Lawrence W. Daly, Chief Sexual Assault Investigative Educator for the One Daly Corporation raises several issues surrounding the concerns of evidence in a sexual assault investigation.