Currently reading Abandoned by Cody McFadyen.
(German title on the cover because I'm reading it in German.)
For FBI Special Agent Smoky Barrett, her colleague’s wedding is cause for celebration. Until a woman staggers down the aisle—incoherent, wearing only a white nightgown. A fingerprint check determines that she’s been missing for nearly eight years. Her coldly efficient captor toyed with her mind and body, imprisoning her, depriving her of any contact with the outside world. As Smoky fits together the pieces of what remains of the victim’s fractured life, a chilling picture emerges of a cerebral psychopath who doesn’t take murder personally, never makes a mistake, follows his own sinister logic, and has set the perfect trap.
I've only read 3 chapters (40 pages in) because I can't see properly at the moment, but it was enough to make me like that book. The first chapter alone would have been enough to make me read the rest in one go. Hopefully I'll be able to continue reading without difficulties soon.