From Wikipedia, the free encyclopedia Mary Theresa Eleanor Higgins Clark Conheeney (née Higgins; December 24, 1927 – January 31, 2020), known professionally as Mary Higgins Clark, was an American author of suspense novels. Each of her 51 books was a bestseller in the United States and various European countries, and all of her novels remained in print as of 2015, with her debut suspense novel, Where Are the Children?, in its seventy-fifth printing. Higgins Clark began writing at an early age. ...