>> the command was given, go, go, go. >> right here? >> right there. >> and the search for answers. >> these people had a plan. it is sadistic. it is horrific. >> tonight, a cnn special report. the d.c. mansion murders. sunday, may 3rd, near phoenix, arizona, a race day for phillip, the 10-year-old son of sava and amy. >> he was passionate beyond belief. he would just be smiling from ear to ear. >> jay howard was phillip's coach. in this exclusive cnn interview, he recalls their last race. >> a typical day we would get up in the morning, breakfast, go to a track. >> they followed him to races all over the country, completely devoted to their son and his