To be clear, a private investigator will only deem the party guilty when he or she catches the spouse in the act of adultery, using video tape or photographs as incriminating evidence. These offenses are the ?bread and butter? of American investigators, since in this country, faithfulness and devotion and other common marital qualities are quickly disappearing, leading to complex court situations. In these matters, an investigator must be very careful not to attract attention; otherwise he or she may be hunted for his or her knowledge and become a victim.