no, no, no. no." >> reporter: natalie collins was at home, still in shock over steve's murder when she heard the news. >> i knew there would be a link between steve's murder and those murders. because people don't get gunned down in their offices in scottsdale. it doesn't happen. >> reporter: natalie's hunch was right. >> scottsdale police were able to confirm for us that the murder scene on thursday and the murder scene on friday was connected. >> reporter: firearms analysis showed a .40 caliber weapon had been used in the homicide of dr. steve pitt. the same caliber gun killed paralegals veleria sharp and laura anderson. and then, about ten hours after the paralegals were killed -- >> about 10 minutes after midnight this morning, we received a call of a shooting at the business complex behind me. >> reporter: an adult male shot twice in the head at an office seven miles from the law firm. >> the doorbell rang.