Walter Saari was born in 1926 in Hibbing, Minnesota, the second son of a Finnish-American mining engineer who worked the open pit at the Hull-Rust mine and a schoolteacher who had grown up in Two Harbors. He went to medical school at the University of Minnesota on the GI Bill and was, by the time he finished his residency in 1957, the first person in his extended family to hold a doctorate of any kind. His mother kept the diploma framed in the dining room of the house in Hibbing for the rest of her life.
He worked at the Hennepin County Medical Examiner's Office in Minneapolis from 1957 to 1961. By the end of those four years he had attended the autopsies of just under three hundred decedents, the majority of them young men. He developed, during this period, a habit of taking long walks at lunch and a permanent slight tremor in his left hand. In the spring of 1961 he answered a small advertisement in the back of the Minnesota State Medical Association newsletter and accepted the position of Carlton County Coroner, based in Cloquet, two hundred and ten miles north.
His wife Ingrid was happy to leave Minneapolis. They had two daughters and a small house on Avenue B with a garden that wintered well. Walter never spoke about the Hennepin County years, except once to his older brother, who had asked, and the answer was: it was not what I went to medical school to do.