Detective Mark McPherson is assigned to investigate the murder of a beautiful and successful advertising executive who was found dead in her apartment. As he delves into the case, McPherson interviews an array of colorful suspects, including the victim's wealthy and snobbish mentor, her charming but disloyal fiancé, and her loyal yet possessive housekeeper. Each person offers differing perspectives on the victim’s life, revealing a complex maze of relationships and hidden desires. McPherson also becomes fascinated by the victim herself, piecing together her life through letters, photographs, and anecdotes.

As McPherson spends more time in the victim's apartment, he develops a strange, almost obsessive infatuation with her, despite her death. The line between professional and personal interest begins to blur, leading him to question his own feelings and judgments. When a startling discovery shifts the course of the investigation, McPherson must untangle a web of deceit, jealousy, and ambition to uncover the truth. The case grows increasingly intricate, putting his detective skills and emotional resilience to the test as he navigates through a labyrinth of secrets and lies.