Bachelor of Science in Chemistry, City University of New York, 1947.
Chemist, Institute Paper Chemistry, Appleton, Wisconsin, 1947-1949; chemist, Krimko Corporation, Chicago, 1949-1950; chemist, University of Minnesota, Minneapolis, 1952-1958; freelance writer,, since 1962.
Member Authors Guild, Mystery Writers American (regional vice president 1974-1975, board directors), Society Children's Book Writers (board directors 1991-1992), International Association Crime Writers (board directors 1991-1992), Sisters in Crime (secretary 1991-1992, board directors), Private Eye Writers American.
Married Robert Aagaard Granbeck, December 31, 1949 (divorced 1973). Children: Christine Ellen, Leslie Carolyn, Robert Alan, Laurie Ann. Married Morrice R. Henderson, December 28, 1979 (deceased).