kay mortensen was a strong-minded man who had built a fortune and a fortress to protect it. then kay was attacked, turning his home into a bloody crime scene. how, police wondered, could someone so vigilant be taken by surprise? it was a riddle that threatened to destroy kay's family until someone with an explosive secret revealed the horrifying truth. here's keith morrison with "mystery in payson canyon." keith (voiceover): there are people on this glorious sun-kissed planet of ours who get up each morning to the miracle of being alive and worry. not that there aren't things to worry about, of course, whether we can do anything about them or not. but some people worry a very great deal indeed and do try to be prepared for whatever. and one of those prepared people was a brilliant retired university professor named kay mortensen, whose sister was a woman named, fern. fern: i said, well, kay, what would happen if i'm not prepared, and i'm hungry or my kids are hungry? can we come to your house? and no, i'll probably just shoot you. you know, so-- jestingly. he wouldn't have,