looking at the crime scene. i radioed sergeant koch lee. >> reporter: furtado's partner kicked in the door, and saw a woman stabbed to death. furtado never saw anything like it and was hit by a wave of fearsome oceans. >> from shock to awe to frightened. that's how it went. the police training then kicked in. >> reporter: adrenaline surging, the cops pull their weapons. >> our thought was to draw our weapon with our safety. so we proceeded to clear the house with weapons drawn. >> reporter: it was all clear. but horrifying. there were signs of a struggle. blood in a bedroom and in a living room by the body. officer furtado radioed in. >> i made the comments, just get here. >> reporter: it was furtado's first homicide. but if he was a stranger to homicide, so is nantucket. there hadn't been a murder on