![Retired Detective Dean Chrestenson Reflects on McGuinness Case](http://townsquare.media/site/119/files/2020/10/Siobhan-McGuinness.jpg?w=980&q=75)
Retired Detective Dean Chrestenson Reflects on McGuinness Case
One man mentioned by name at the press conference on Monday that revealed the killer of five year-old Siobhan McGuinness in 1974 was now retired Missoula Police Detective Dean Chrestenson.