I Heard That Song Before is a suspense novel by American author Mary Higgins Clark.
The daughter of a landscaper for the wealthy Carrington family, six-year-old Kay Lansing sneaks away from her father's side one morning, and overhears a woman blackmailing a man for money.
That same night teenager Susan Althrop, eldest son Peter Carrington‘s girlfriend, vanishes into thin air and is never seen again.
As fate would have it, Kay falls in love with Peter after she approaches him about hosting a literary luncheon, and the two promptly marry.
However, his peculiar nocturnal habits soon set her teeth on edge, especially when he's unconsciously drawn to the place where the former Mrs. Carrington met her end...[1][2] The novel was a critical and commercial success, garnering the excellent reviews Clark has become accustomed to over the years.