a squad that included detective marty wildman and sergeant mike mcgrath was soon on the scene. >> weked at the blood smear on the rear bumper of the car, then we said everybody out, we're taking this, started going through the house method cli. >> processing it as a homicide scene basically. >> it looked to detectives as if theresa had been attacked, and clues found throughout the house supported that. on the stairs, a footprint too large to be theresa's, and this. >> we saw a small little brass or metal ring. >> steps away in a half bath, detectives found a towel rack missing from a wall. and two more spots of blood. one near the baseboard, another on the mirror. >> analysis of the two blood droplets from the same person? >> same person, full male profile. >> not theresa insana. >> not theresa insana. >> then there was the blood on the bumper of theresa's car. that would later out turn out to be theresa's blood, not an assailant's. detectives prepared themselves for what might be in the trunk. when it was opened, they found a bit more blood and mud. then inside the car, police found