Peril at Dorrough — Juanita Tyree Osborne

After Melissa Allenworth's parents were killed in a plane crash, she took charge of the family's large farm, with the help of Evelyn, her young aunt, Brendan, the farm manager, and two servants.

That summer Norman Van Wych, a handsome, magnetic mystery writer, rented the guesthouse at Dorrough, and Melissa felt herself attracted to him despite her fears that she should not rush into anything with this debonair stranger. Then things began happening -- little accidents at first, but growing more threatening as each day passed. And Melissa came to the frightening awareness that somewhere at Dorrough, a twisted, dangerous mind was planning her doom.