. >> detective barry golazeski decided to put brandon and michelle's home under 24-hour surveillance.w brandon take the garbage out to the sidewalk, and on a hunch confiscated it since trash is considered public property once it's put out for collection. in the trashbag, golazeski discovered something suspicious, a used telfa pad, commonly used to cover open wounds. >> and it has a unique wound outline on it. you're able to see the entire outline. and it sort of looked like a mouth. >> according to golazeski, they look like bite marks imprinted on these bandages. >> scientists examined the telfa pad with alternate light sources, which can provide much more information than an examination with normal white light. >> if you look at the gauze pad under white light and you see absolutely nothing, you may go to an alternate light source and find a material which has oozed from the bite mark that reacts to the alternate light source. >> under the alternate light source, an image appeared on the bandage. >> the shape of the image on the bandages was elliptical. it had the same type of measur