what they observed right away was astounding. the home security system that matt leili had casually mentioned to detective everson a few days earlier appeared more appropriate to ft. knox than a house in the burbs. >> and when you first see the house on the road, you can see all these huge -- these big cameras on the eaves of the house, both sides. >> reporter: there were 21 security cameras in all, with a tricked-out control room to monitor and record everything. he sounds like a one-man nsa. >> it was a very low crime area. so it almost boggled the mind as to why he felt he needed quite so much surveillance coverage for the house. >> reporter: odd, to be sure, an observation to tuck away for later. but the duty that day came first, notification, the officers telling matt leili that his missing wife had just been found dead. >> the uniformed guys told me that he at one point seemed like he got sick. >> reporter: matt leili may well have been sick. sick of talking to the cops,