"We need to know who it is, if he or she is there," Lucas said. "That person's life could be in danger from the same people who killed Tubbs . . . unless he or she did it. Then, that'd mean you're working with a cold-blooded killer." "Okay. I'll think about it," MacGuire said. "I'm not lying to you here, I really don't know--but I'll think about it, and ask around."