Veiled Cliffs — Diane Yale

All her life Joanna Blake had lived on an enchanting North Carolina island. It was on this tiny isle, with its lovely plants and imposing cliffs, that she'd fallen in love with Kent Landon. Then her sister Jill married Kent, and Joanna left home for good. But a few years later, when she learned Jill had killed herself, Joanna returned -- to find her island of magic had become an island of evil. Joanna was sure her lively sister would never jump off the cliffs, as reported. She was frightened by the odd, childish drawings she found, the dead bird left in her room, and the “accidents” that befell her. And she was terrified by her hunch that the one behind it all -- the one who wanted to kill her now -- was the only man she could ever love…