inspiring stephen king's "the shining." >> thank you. >> reporter: he scheduled an early dinner so they could turn in early. it was a romantic weekend, after all. then saturday afternoon, they set out for rocky mountain national park to go on a hiking trail harold had scouted out a few months earlier. but just about 24 hours in, the perfect weekend turned tragic. >> 911, what's the address of your emergency? >> hello, my name is harold henthorn, and i'm in the rocky mountain national park. >> okay. >> i need an alpine mountain rescue team immediately. >> reporter: it was just before 6:00 and harold needed help urgently. >> my wife has fallen from a rock on the north summit of deer mountain. on the deer mountain trail. and she's in really critical condition. >> reporter: harold told the 911 operator that toni had fallen from the edge of a cliff. >> we need to be sure that you know my location first. i have really bad cell coverage. >> okay. >> okay. i'm on deer mountain. >> reporter: immediately, the park launched a ranger who was