Guy attended Kent School — which at the time was just the school "for boys" — and graduated from Harvard in 1929.
Murchie had a varied career, first as a reporter with the Chicago Tribune. He began work with the paper as a feature writer in 1934 and later became one of its war correspondents during World War II. Murchie was said to be the first correspondent who was wounded during the conflict; he was injured in the leg during a bombing raid in Dover, England. During the war, he used his talents as a photographer and artist as well to capture scenes of the war from his posts in England and Iceland.
In 1942 he began work as a navigation instructor with American Airlines’ Air Transport Command. He worked from 1943 to 1944 as a navigator. In 1945 he founded the Apple Hill Camp for children in Pepperell, Massachusetts, and Nelson, New Hampshire, and served as its director from 1945 to 1955. He also found time to teach at the Landhaven School in Maine and to serve as a navigator for Seaboard and Western Airlines. Moreover, Guy wrote and edited books.
Guy was raised as an Episcopalian, but then he officially joined the religion Bahá'í in 1939.
Physical Characteristics: Murchie as an adult stood 6'6" tall and weighed 225 lbs.
In 1932 Guy married Eleanor Forrester Parker Cushman, who was some 26 years his senior. Although the marriage eventually failed, Murchie dedicated a book to her after her death in 1960. In 1944, he married Barbara Cooney, and fathered two children - Gretel and Barnaby - within three years. The marriage did not last, and Cooney left him.
After the death of his third wife Katie on May 3, 1986, Murchie moved to California and married an old friend, Marie, at the home of Murchie's friends Marzieh and Harold Gail.