pat andler who worked on the defense said the fire started because of an electrical short in the attict it wrong. it is embarrassing to not that he is a fellow fire fighter like myself. >> reporter: before the trial, he was offered a plea for one year probation. he refused. >> were you not tempted. probation sound better than 20 years in prison. >> i don't care if they gave me one second of probation. i would not sign no paperwork to admit guilt to a charge. >> reporter: then the case against capels fell apart. traces of accelerant that sadie alerted to, the results came back from the lab negative. no traces of accelerants, prosecutors dropped the charges. back on the sloan case turns out the same thing happened. sadie found accelerants that the lab did not. why didn't sadie get it wrong both times? could this be why? >> fake it for me, okay. >> fake it. i could not believe what i was hearing. >> reporter: coming up, more word you might find surprising coming from captain andies. >> we used to think we had to have concrete evidence. >> hey, captain andies. >> we try to get our own answ