Mary Theresa Eleanor Higgins Clark Conheeney (née Higgins; December 24, 1927 – January 31, 2020), known professionally as Mary Higgins Clark, was an American writer of suspense novels. Each of her 51 books was a bestseller in the United States. Her best known works were "A Stranger Is Watching", "A Cry in the Night" and "Remember Me". Clark was born in New York City.