knock down the theory that anthony garcia killed two people in 2008 and two more in 2013 out of revenge. we ve got to get rid of her stupid quote. who? what quote? the shakespeare quote, shall i not revenge or whatever. reporter: according to the defense team, anthony garcia had no motive to kill anyone. what s wrong with the prosecution theory that anthony garcia blamed the people at creighton for everything bad that had happened to him since he left creighton and the idea that when people would check out his resume, they would inevitably get back to creighton and they d get a bad report about him. the problem with the state s theory is that anthony garcia would ve been unaware of those communications. they don t let people in on those communications. reporter: on the other hand, they pointed out, dr. hunter had actually handed garcia this short letter of recommendation
where she was that day and that he was in that area on the date that those crimes occurred. reporter: the composite sketch generated leads and exactly zero suspects. there wasn t anything that you could correlate to the actual perpetrator or the crime scene that day. reporter: as for tom hunter s online gaming contacts, detectives deciphered the ip addresses and anonymous screen names and tracked down those people. and as far as you knew, he never met any of those people in real life. correct. reporter: turns out none of those online contacts was anywhere near omaha on the day of the murders. the detectives were making progress. but reporter todd cooper says the nervous citizens of omaha had no way of knowing that. all good police departments are pretty good at keeping that information close to the vest. we just kept waiting and waiting.
yeah, absolutely. reporter: it would take months to track down tom s online contacts. more pressing was what detectives were hearing from the neighbors. several said they had seen a stranger walking near the hunter home late that afternoon. tell me about the person neighbors described. an olive-complected male who was heavyset, dressed in a collared shirt. some described a jacket, possibly like an ill-fitting suit with a shoulder bag. and several people would correlate that individual to a silver honda crv. they identified the actual make of car? yes. that all seems pretty helpful. very. the same individuals would describe that that vehicle was missing a front plate. but they would describe the rear plate as kind of a white background with dark lettering and kind of describe a multiple-colored sunset or kind of a pastel sunset. so it s not a nebraska plate. out of state is what our feeling was, yes.
them what they re looking for answers from you that you can t give them, you know? reporter: tough for you guys, too, because i m sure you want to keep working on this. meanwhile yes. reporter: your boss is saying, here s another case. and another one. and another one. yeah. and that s why it went to the cold case unit. reporter: and that s how it stayed until may of 2013. the breakthrough moment came in brutal form, yet another double homicide in omaha. for detectives who d been at the hunter home five years earlier, this one felt uncomfortably familiar. it was like, oh, my gosh. this could very easily be related to the dundee homicides. coming up it was a jolt of electricity and a big hit of deja vu. you could see the female victim lying in the living room. it was very clear there had been a struggle from all of the
shreveport in 2008. was he on his way to confront doctors there? only anthony garcia knows. he clammed up when omaha detectives tried to talk with him. we introduced ourselves as detectives from the omaha police department and that we were investigating homicides in our jurisdiction, and mr. garcia immediately asked for an attorney. that s it? and that s it. i mean, at that point as an investigator, i can t continue questioning. reporter: later that afternoon, omaha police chief todd schmaderer stepped before the cameras to make the announcement that his city had been desperately waiting to hear. arrested this morning was dr. anthony joseph garcia for four counts of first degree murder and use of a weapon to commit the murders. reporter: for the families of roger and mary brumback of tom hunter and of shirlee sherman, the arrest was very welcome news. i m at walmart with my kids,