Katherine Hall Page was born and grew up in New Jersey, graduating from Livingston High School. Her father was the Executive Director of the Kessler Institute for Rehabilitation and her mother was an artist. Early on, the family developed a love of the Maine coast, spending summer vacations on Deer Isle starting in 1958. Page now lives on the island for three or more months each year and the rest in Massachusetts. She received her BA from Wellesley College, majoring in English and went on to a Masters in Secondary Education from Tufts and a Doctorate in Administration, Public Planning, and Social Policy from Harvard. Before her career as a full-time writer, Page taught at the high school level for many years. She developed a program for adolescents with special emotional needs, a school-within-a-school model that dealt with issues of truancy, substance abuse, and family relationships. This interest in individuals and human behavior later informed her writing.
Married for forty-two years to Professor Alan Hein, an experimental psychologist at MIT, the couple have a thirty-four year-old son. It was during her husband's sabbatical year in France after the birth of their son that Page wrote her first mystery: The Body in the Belfry (St. Martins Press), the 1991 Agatha Award winner for Best First Mystery Novel. The Body in the Snowdrift (Wm. Morrow) won the 2006 Agatha Award for Best Mystery Novel. Page was also awarded the 2001 Agatha for Best Short Story for "The Would-Be Widower" in the Malice Domestic X collection (Avon Books). She has been nominated for the Edgar, Macavity, and Mary Higgins Clark awards. The Body in the Boudoir was a finalist in the 2013 Maine Literary Award for Crime Fiction.The Body in the Casket, the twenty-fourth in the series, is out now from Wm Morrow in hardcover, large print, e-book, and audio editions. Morrow also published a collection of Page’s short fiction, Small Plates, in 2014.
Her series cookbook, Have Faith in Your Kitchen (2010) was an Agatha nonfiction nominee. In addition to her adult fiction, Page has published a middle grade mystery series, Christie & Company, and a YA, Club Meds. Katherine Hall Page received Malice Domestic's Lifetime Achievement Award in April 2016.