investigator boland she had been three hours away at her parent s house at the time they believe that keith had been shot. she did admit while she did get angry with him, she would never hurt him. never in a million years, no matter what he said or did, did i ever consider or conceive of the thought of harming him or hurting him or living without him. i remember feeling absolutely terrified and i thought i have two little boys at home. i need to get home. they don t even know he s gone. but in through some of your messages, you displayed the people say things in anger. anger? anger. you know what i mean? have i been angry? you bet i have been angry. anybody would be in certain situations. that doesn t make them a killer. reporter: but had there been a trigger leading up to friday night? the investigators saw in kimberly s text messages that she was intent on getting back from reed a high school diploma,
i hear you saying it may have been a love triangle, only in rob s mind? yes. that is not what was going on? no. it was more like a connective friendship and it was flirting. reporter: she says she e-mailed keith several warnings and tried to reach her husband throughout the next day, but her calls went straight to voicemail. i was just thinking i was gonna get a phone call from the police saying your husband was acting like an idiot, but i didn t hear anything from anybody. reporter: mary says rob returned home saturday morning, telling her keith had been out of town. instantly, i was like, oh, good, i was so happy. like, i was so relieved. reporter: relieved, she told the detectives, until four days later, when she ran an internet search to see what her husband could have found out about the superintendent. there it was. keith s picture, saying 51-year-old keith reed shot to
at a big state educator s his name. and, of course, there was no conference across the state. answer. his brother, kevin reed, a former fbi agent had a bad reporter: someone else who feeling about things when he started to wonder what was up arrived at his brother s house that saturday was caitlin. sunday night. the two spoke by phone every i went right into fbi mode. day. i didn t didn t have time to get emotional. he didn t answer my phone call on that saturday and so i thought that was a little reporter: his brother, strange. grounded, stable, reliable, was but i was really busy, so just no one s candidate to just one day go missing, especially not then. kind of forgot. reporter: by sunday, his daughter, megan, had become very concerned. she hadn t heard from him why, just a few weeks before, he had had the moment every dad either, worrying. okay, like answer the phone, lives for, walking his eldest daughter, kate lip, down the aisle. it s time to answer your phone, i
lives the educator had touched. brother kevin was a pallbearer. did you speak that day? i couldn t. my son had to hold me up. you were a wreck at that point? oh, yeah. completely. reporter: keith s three daughters, though, did find the strength to speak. years before, they had almost lost their father in a motorcycle accident. he had persevered. now, they were determined to make him proud. i knew that he wouldn t want us to be sad and depressed. i knew he would want it to be a celebration of his life. reporter: it was that same afternoon that taglianetti s gold buick was spotted speeding down a road near a national park in virginia. make the plate, pull it over and take him into custody without incident. reporter: anthony rob taglianetti was charged with the second-degree murder of keith reed. to the prosecutor, the theory of a jealous husband killing his perceived rival connected all the dots. but wait, the defense said, the real story of who was to blame
yes. reporter: still, it hardly seemed like a big-deal relationship. could a single date and some suggestive phone calls really add up to murder? in mary s mind, yes. but she hadn t called the sheriff to confess to the crime, nor had she called to point her finger at a potentially jealous girlfriend. no, mary had someone else entirely in mind and the clue to who killed the superintendent could be found on his computer. coming up, the secret comes out. it was this long thing about don t don t you dare contact my wife ever again and if you do, you re gonna be sorry. when dateline continues. man: sneezes skip to the good part with alka-seltzer plus. now with 25% more concentrated power. nothing works faster for powerful cold relief. oh, what a relief it is! so fast!