The Cry of the Owl (Highsmith, Patricia)

Blurb

The Cry of the Owl is a psychological thriller novel by Patricia Highsmith. It was first published in the US in 1962 by Harper & Row and in the UK by Heinemann the following year.
The book tells the story of Robert Forester who, following a painful divorce, develops an obsession with the seemingly happy, 23-year-old Jenny Thierolf. As a way of easing his own discontent with life, he begins spying on her, and is surprised when she invites him into her house after spotting him one night. A confrontation with her jealous ex-fiancé is the start of a series of hazardous events.