El día que se perdió el amor by Javier Castillo

After the phenomenal success of The Day He Lost His Mind, Javier Castillo returns with a novel that pushes the boundaries of love, pain and suspense. In The Day Love Was Lost, at exactly 12:00 noon on December 14, a naked young woman covered in bruises walks into the offices of the FBI in New York holding several yellow-stained notes. The head of the Criminology Unit, Inspector Bowring, takes charge of the case—and soon realises that this strange appearance is linked to another chilling crime: a woman decapitated hours later, whose name matches one written on the notes.
As Bowring digs deeper, what emerges is not only a violent mystery but also a tangled network of old wounds, broken promises and twisted love. Castillo crafts multiple narrative threads and time-frames, deftly building suspense while characters grapple with desire, guilt and the cost of obsession. This new novel is described as «an adrenaline injection, a unique reading experience, a different and addictive thriller» (source: Spanish catalogue). 
With more than 2.5 million copies sold in his earlier works, Castillo once again delivers a page-turner that challenges the reader’s assumptions about who the victim really is and what motives drive people when love turns dark. This edition in Spanish (432 pages, Debolsillo) is ideal for thriller fans who crave intricate plotting, vivid characters and emotional stakes that go beyond the standard crime story.