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we cannot begin to imagine, nor possibly describe, the shock and grief that descended that first morning on jan's parents, mary jean and terry pigman, to pick up the phone and hear from their son-in-law that their daughter was dead. and he, chris, had been taken to the sheriff's office for questioning. mary jean pigman: we threw on some clothes and went out there. terry pigman: when we first walked in, the first thing they were concerned about was how we found out that he was there. the next thing of their mouth was 85% of the time, the spouse done it. and at that point, i felt ok, i know where you guys are going with this. and i'm-- i felt like telling them, you're full of it. i mean, we've never felt he was the one that did it. keith morrison: no, they didn't. and so right after that first interview with agent woodford, jan's parents invited chris and bailey to move in with them. that's where chris's brother, keith, found

them later that first day. we've never really been an emotional family, and we don't wear our emotions on our sleeves, i guess, but i remember looking at chris. and i had never seen chris as devastated as he was. i mean, he was in complete and utter shock. how did he look that was different? well, his eyes were welled up. he was kind of biting on his bottom lip a little bit and just kind of shaking his head back and forth. i'd never seen him so devastated ever. keith morrison: bailey was there, too, of course. also, a mess. earlier at the sheriff's office, she'd had her turn to tell the investigators what she saw and heard early that morning. wasn't quite the same story as the one her father told. while both chris and bailey have hearing deficits, bailey said she heard, loud and clear, not one, but two shots.

keith morrison: so bailey, who had a digital clock by her bed, had just put the murder at "like 2:30." chris called 911 at 2:39. might be an issue. why the delay?

keith morrison: of course, those deputies were right when they told bailey grandparents that a significant other is, quite often, the prime suspect in cases like this. so they had to ask, what did bailey know about her parents' marriage?

keith morrison: so here in the sheriff's office, it was bailey who told the investigators how she worried about the resort at spider lake. it was making her anxious she said. keith morrison: to help her cope, bailey said she confided in her friend. an older boy named jeremy majerus. he'd been coming around to see bailey quite a lot that summer.

keith morrison: a resort that couldn't afford, an apparent arson fire in a garage, and an unapproved, maybe inappropriate older boy in their daughter's life. there were issues in this home. and a kid who needed talking to, jeremy majerus. coming up--

keith morrison: nothing that sounds suspicious, until jeremy mentions something else-- keith morrison: --when "dateline" continues. ♪♪ when viruses and bacteria from outside, follow them inside... parents know it's time to go into... ♪♪ protect mode. for your cleaning routine, adding lysol disinfectant spray is 3 times more effective at stopping the spread of germs. and for your laundry, adding lysol laundry sanitizer kills 99.9% of bacteria detergent leaves behind. lysol. what it takes to protect.

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what happened in the kruse house here in tiny brewster, minnesota was a truly, terrible thing. the loss of that woman, jan kruse, a genuinely tragic event. made even more so because it just seemed pointless. why would somebody go into the house, shoot some sleeping woman? that didn't make any sense. so did she have any enemies who would want her dead? no. that was a question that we asked often was, who would have wanted jan dead? and we could not find one person that didn't like jan or that thought she wasn't a good person. keith morrison: there was, however, that young man,

jeremy majerus-- the not quite boyfriend. unapproved by bailey parents. passions can run high in a situation like that. jeremy's place-- his family's farm, that is-- was a 20 or 25 minute drive away from the kruse house. deputies drove out to talk to him. recorded the conversation. keith morrison: so as the deputy, when was the last time he talked to bailey? or communicated at all? keith morrison: jeremy said he met bailey while helping out with the high school marching band. he had graduated, but continued to volunteer. and somehow, during those band practices,

he and bailey had grown close. it was all very innocent, he said, but they really, really liked each other.

keith morrison: so they just talked, said jeremy. and the deputy asked, what about lately? keith morrison: jeremy said the arguments, according to bailey, were about trying to buy the spider lake resort. keith morrison: so bailey was having trouble dealing with all that, said jeremy.

keith morrison: was it true, what jeremy was saying? bailey hadn't said anything like that when she talked to investigators a few hours after her mother was killed. so the very next day, they brought bailey in again to ask about her parents. at first, they didn't tell her they'd been talking to jeremy. keith morrison: no disagreements? then they told her about the jeremy interview. keith morrison: and then she painted a slightly different picture of what had been going on at home. things had been difficult lately.

there was that upsetting garage fire, but also, jan had a hysterectomy, chris had his appendix out, and then on top of it all, they were trying to figure out the whole resort deal. keith morrison: so once again, they asked bailey, what happened the night her mother was shot? what she heard from her bedroom, one floor below her parents' room? derek woodford: we asked bailey, did you hear anybody running out of the house or moving around? and she said she only heard one set of steps from upstairs, and that was chris. he was the only one that was moving around upstairs. she did not hear anybody else. keith morrison: now, what did that mean? and what would it mean when paired with csi reports now coming in about curious little particulars at the crime scene?

coming up, a fortunate missed shot, or was it a suspicious one? keith morrison: and chris seems to change his story-- keith morrison: --when "dateline" continues. [coughing] copd hasn't been pretty. it's tough to breathe and tough to keep wondering if this is as good as it gets. but trelegy has shown me that there's still beauty and breath to be had. because with three medicines in one inhaler, trelegy keeps my airways open and prevents future flare-ups. and with one dose a day, trelegy improves lung function

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and is 2x more absorbent so you can use less. the way people say goodbye can tell you a lot about a community and about the person they gather for. the funeral for jan kruse. kay king: the visitation was at the lutheran church. and there were people lined up down the block waiting to get in because jan was so liked and respected in the community. it was a long, long day and--

but it was heartwarming or that many people cared-- cared about her and about her family and chris and isaac and bailey to come pay their respects to her. the whole town was probably, pretty upset. yes. and she'd lived here all of her life, so she knew a lot of people. they had good things to say about her. keith morrison: and so, there was a respectful pause. and then a couple of days later, chris kruse was once again at the sheriff's office with senior special agent woodford. keith morrison: some things had been bothering woodford. like, why chris said he'd only heard one gunshot when, obviously, there had been two?

keith morrison: but that first slug, the one he said he did not hear, agent woodford explained to chris that one would have hit him had he been lying in bed beside jan as he said he was.

keith morrison: then agent woodford told chris that the autopsy revealed that jan was actually sitting up when she was hit with her right arm stretched out toward the shooter. in fact, her right hand was grazed by the shot. derek woodford: to me, almost like she saw it coming. yeah. derek woodford: and so that was a concern based on what chris had told me the first time, that she was shot when they were laying down.

keith morrison: and here, chris seems to alter the narrative. says he awoke to find his wife sitting up beside him.

keith morrison: so was this man changing his story? keith morrison: then agent woodford asked chris again, about what he heard jan say that night.

keith morrison: chris was not under arrest, of course. though, he had to know he was under a microscope. so the answers he was giving, was he just confused? what was going on here? agent woodford was all too familiar with the worst of human behavior. very aware, too, that he was talking to a grieving husband. but aware also that grieving spouses and relatives and friends are fully capable of the most determined mendacity when hiding culpability for the worst thing they've ever done. so he and his fellow investigators were certainly not finished with chris kruse and things that seemed, to them, odd.

keith morrison: coming up, another puzzling detail. if his wife was bleeding to death, how did chris come away so clean? keith morrison: when "dateline" continues.

keith morrison: chris kruse had buried his wife of 20 years, along with their dream of owning a lakeside resort. now, he sat in an interview room in the county