roger moore. paul's dad. and like his son, wanted to help catch the killer. and told the detectives he had important evidence to share. it was an audiotape, answering machine messages his nephew pete left on his phone. coming up -- investigators discover a brand-new suspect. >> we may have somebody else to look at. >> but who are the hunters? and who are the hunted? >> and all of a sudden the tire went flat. >> as police go after more evidence, someone comes after them, leaving a taunting message out in the fields. >> here i am, i'm doing this to you now, come find me. >> when "family business" continues. maria ramirez?