Legal, Ethical, and Privacy Constraints on Investigations
This domain is where many candidates lose points: knowing the limits on investigative power. Understand the constitutional and statutory boundaries - the Fourth Amendment's protection against unreasonable searches and seizures (largely a government-action doctrine, but relevant to how investigators coordinate with police), privacy torts such as intrusion upon seclusion, and prohibitions on trespass, harassment, stalking, and unlawful interception of communications. Know that federal and state wiretap/eavesdropping law restricts recording conversations; Arkansas generally requires awareness/consent considerations, so an investigator must not secretly record private conversations without legal authority. Traps: assuming a private investigator may do anything a client authorizes - a client cannot consent to illegal conduct on a third party's behalf. Another trap is confusing public-records access (lawful) with pretexting or impersonating law enforcement to obtain protected information (unlawful).
Ethics: act with honesty, avoid conflicts of interest, protect confidential client information, do not fabricate or destroy evidence, and respect subjects' dignity. Know that misrepresenting yourself as a police officer is prohibited, and that discrimination and harassment are off-limits.
Rule of thumb: "Legal authority, not client instruction, defines the ceiling." If an act would be unlawful for an ordinary citizen, it is unlawful for an investigator unless a specific legal authority permits it. Worked example: a client asks you to place a hidden camera inside a rented apartment to catch a cheating spouse. Even with the client's request, secretly recording inside a private space where the subject has a reasonable expectation of privacy is unlawful - the correct answer is to decline and pursue lawful alternatives such as public surveillance. When privacy and client demands conflict, choose the lawful, documented path.