now, thanks to a tip from rick anglin, they were getting closer. >> i'm convinced that we're dealing ll the crime scenes related back to dwight and connie's divorce, and custody battles from nearly a decade earlier. plus, forensic analysis had already told police all four victims had probably been killed with the same weapon. and there was a critical piece of evidence that might link the weapon to dwight. that bit of dna on a shell casing recovered from the scene of steve pitt's murder. dna tests can take weeks or months. that was time police didn't have. >> we had some family members of mr. jones that were in northern arizona with the help of the phoenix police department air unit we flew a detective up there. >> reporter: at the same time, other investigators were on the hunt for dwight. >> we had a vehicle description for mr. jones. it was a 2001 gold mercedes e320. >> reporter: cops started pulling security video from the multiple crime scenes, looking for that gold mercedes. >> some surveillance video near the scene of dr. pitt's office picked up that vehicle sort of acting stran