Melora — Mignon G. Eberhart

"I am going to kill you". That was the message that Anne found in her typewriter on that fateful day. Was it a prank, written by her fiance's niece -- or was it a serious threat? Anne's marriage to wealthy New York socialite lawyer Brent Wystan had been shadowed by the menacing memory of his first wife, Melora. Although hated by Brent's widowed sister-in-law Cassie, Melora had been adored by Cassie's children. Cassie continued to run Brent's home so smoothly that Anne felt useless and a trespasser. Then another ominous note follows the first . . .