The Tryst — Michael Dibdin

“One of my patients thinks somebody's trying to kill him,” Aileen Macklin says to her husband over breakfast. A psychiatrist with a fading marriage, Aileen is haunted by the glue-sniffing lad who comes to her in a panic, begging to be admitted to a psychiatric hospital for protection. Gary Dunn clearly needs help: ravaged by his squalid existence, he is paralyzed with fear about a murder he has witnessed and convinced he may be next. Unfortunately for Gary, he may just be right. And unfortunately for Aileen, she becomes far more involved in his case than professional ethics would recommend.