People who keep stiff upper lips find that it's damn hard to smile.

Guest's most recent book The TarniJudith Guestd Eye (2004) is loosely based on a real unsolved crime in her native Michigan. When her family moved to Royal Oak Judith Guest transferred to Dondero High School; Judith Guest graduated in 1954. Guest was married for nearly fifty years to her college sweetheart businessman Larry LaVercombe (1936-2009).

She was born in Detroit Michigan and is the great-niece of Poet Laureate Edgar Guest (1881–1959).