Man, that question immediately makes me think of 'Misery' by Stephen King. It’s the absolute blueprint, isn’t it? Not your standard snatch-and-grab, but a captivity narrative where the psychological torment is the entire engine. Annie Wilkes isn't just a kidnapper; she's a fan, a critic, and a deranged nurse all in one. The suspense doesn't come from whether Paul will escape, but from the slow, meticulous unraveling of both his sanity and her fragile niceness. The hobbling scene is legendary for a reason, but for me, the real horror is in the quieter moments, when she’s being 'kind' and he has to perform gratitude for his own imprisonment. It’s a masterclass in claustrophobia where the prison is a single room and the warden’s mood swings.
If you want something that feels more like a traditional kidnapping but pivots entirely into the mind, Megan Abbott’s 'The End of Everything' is a gut-punch. It’s told from the perspective of a thirteen-year-old girl whose best friend vanishes. The suspense is so internal and skewed; it’s less about finding the victim and more about the narrator’s own twisted, almost romantic fascination with the crime and the missing girl’s family. The psychological terrain is murky adolescence, where obsession blurs with loyalty. You’re never quite sure what’s real and what’s a projection, which makes the final revelations land with this sickening, quiet thud rather than a bang. It’s a brilliant, uncomfortable look at how trauma warps perception.
For a more recent take, I’d throw in 'The Silent Patient' by Alex Michaelides. Okay, the kidnapping element is part of a broader past trauma that’s revealed slowly. The book is built on the psychological suspense of silence—why would a woman who seemingly murdered her husband stop speaking entirely? The therapist’s determination to get her to talk becomes its own form of emotional captivity and unraveling. The twists are divisive, sure, but the atmosphere of the psychiatric unit and the slow dissection of memory and guilt perfectly fit the brief. It’s all about the prison of one's own mind, constructed from a single, horrific event.