it began with, of all things, a message to the facebook page of the zanesville p.d.ad volunteered that her husband was part of a stick-up gang. >> we came in and spoke with her and obtained a lot of valuable information for this investigation. >> reporter: detective phil michel of the zanesville p.d. had been working for two years on a string of armed robberies. when got the facebook tipster in for an interview, guess who she identified as two members of the robbery crew? none other than sirius underwood and josh daniels! if the tipster could be believed: they'd been bandits together two years before brandy would be found shot to death. the woman confirmed something detective michel had long suspected, but been unable to prove: that the robbery of a local department store had been an inside job. josh daniels had been working at the store at the time and handed over seven thousand dollars to a masked gunman. >> if we had been here on january 1st, 2012, what might we have seen? >> you can an individual come from the southwest side of the parking lot -- he stuck the gun