Here are 8 Mary Higgins Clark books, some hardcover, some paperback.  Titles- I Heard That Song Before, Loves Music Loves to Dance, The Second Time Around, Two Little Girls in Blue, You Belong to Me, The Anastasia Syndrome and other Stories, Before I Say Good-Bye, Daddy's Gone a Hunting, He Sees You When You're Sleeping ( with Carol Higgins Clark).  Good luck bidding!