i guarantee it. welcome to the nascar xfinity series. >>> the pieces of the puzzle were starting to come together in the search for the identity of the murdered pregnant woman found in the metal drum. the serial numbers on the drum led investigators to a chemical company based in new jersey. >> i went there with a detective from our lab, who had some knowledge of chemicals. we went there, we showed them the pellets, and we showed them the green material. showed them pictures of the barrel. >> the chemical company identified the green liquid in the bottom of the drum as a dye, a halogen green dye used to color the bases on plastic