Cathy Marie Buchanan is a New York Times bestseller and book club favourite, recognized for her compelling historical novels. She is the author of three novels. Her most recent, Daughter of Black Lake, was chosen as a Best Fiction for Fall by Entertainment Weekly and Parade magazine. Her previous novel, The Painted Girls, was a New York Times bestseller, a #1 national bestseller in Canada, and was named a best book of the year by NPR, Good Housekeeping, and Goodreads. Her debut novel, The Day the Falls Stood Still, was a New York Times bestseller, a Barnes & Noble Recommends selection, and a Canada Reads Top 40 Essential Canadian Novels of the Decade.

Buchanan was born in 1964 in Niagara Falls, Ontario, Canada. She holds a BSc (Honours Biochemistry) and an MBA from Western University. Her work has been translated into nine languages.