for the first two years of their marriage their careers kept them apart. toni in mississippi, harold in colorado and when toni was finally able to move west to be with harold they suffered a lot of fertility issues and had miscarriages it was a sadness to her. reporter: back in mississippi, toni s brother todd and sister-in-law rhonda were also struggling to have a baby but then after years of disappointment for both couples, all their prayers were answered. we both ended up pregnant at the same time. reporter: that must have been a really happy time given what you went through to get there. absolutely. all of sudden, you know, good news here, good news here, and, you know, get ready because, you know, you re going to have a houseful reporter: in june of 2005, toni and harold welcomed their baby girl, haley by then, todd and rhonda already had anna kate. when the girls were a little over a year old, the henthorns
found his wife, toni wasn t talking. she was barely breathing, and she was lying in an awkward position so he told the ranger, he pulled her to a flatter area. then he made that first call to 911. 911, what s the address of the emergency? i need an alpine mountain rescue team immediately. reporter: but there never was a rescue toni died too soon her friend allison talley says in the days after toni died, everyone s focus was dealing with their grief while trying to help haley and harold. he s the grieving widower with the young daughter. right there was no shortage of people over there trying to help and be in the home. we talked to him several times and every conversation had that element in it of how wonderful all his friends and his church family were being to him. reporter: within a day of toni s death, harold reached out to someone who had always been there for him, kim laferriere. i got a text at 10:30 on sunday night
be fun to really surprise her. so they put him in an exam room. reporter: a colleague shot this cell phone video. so she picks up a chart, walks into the room like she normally would, and then there s her husband. and she s like, what s going on? and he says, you know, we re going away for the weekend, happy anniversary. and she s like, no, no, no, no i can t do that. and he says, you can tammi fixed the schedule so you re ready to leave. reporter: this was well orchestrated yes reporter: this anniversary plan yes reporter: harold thought of everything he hired baby-sitters for haley. he d even packed toni s clothes. she couldn t say no i mean, she just, you know, he had it all worked out, so off they went. reporter: harold henthorn, the consummate planner, had pulled it off. now the perfect anniversary weekend could begin. the couple left denver on a friday afternoon and headed north. harold booked a room at the stanley, a historic beautiful
kind of sad? that made me very sad, and that s when i really thought things are not right reporter: tammi says that even though toni seemed to adore her daughter haley, she often gave up mommy time, staying late at the office instead. we would be done. patients gone, staff gone. and she would still be on her computer but it wasn t work-related it was playing games and so we thought, that s so odd. why does she stick around the office we started to think that maybe she just didn t want to go home and maybe because of harold. reporter: if there was trouble in the marriage toni never said so directly not to friends, not even to family todd and rhonda worried maybe she was afraid to say too much i think he had held control over toni with haley, you know his parents heard conversation that they weren t meant to hear that he held, you know, divorce over her head. i ll divorce you.
reporter: toni s friends at work couldn t believe it either. i got a call from christy at our office and all she said is, tammi, toni fell reporter: what did you think when she said she fell i just said, is she okay? no, she died and i fell to my knees and my husband said, oh, my gosh, what s going on? and i said, dr. henthorn fell off a cliff. reporter: everyone was heartbroken for toni harold and, most of all, the henthorns 7-year-old daughter haley. i put myself on the mountain and at the moment that she probably knew, well, this is it, you know i know her thoughts were of haley. reporter: about 150 people die in national parks each year. in rocky mountain national park, the leading cause of death is falling. before i wrote this book, i didn t know that the national park had investigators