The Whisper of the Fire (literal translation — note: English edition may have a different title)

In Tenerife, 2019, twin siblings Mario and Laura Ardoz converge on the Canary Islands to mark a new chapter of life — Mario having just completed his final chemotherapy session, Laura intent on a fresh start. But when Mario suffers a relapse and is hospitalised, he returns to find Laura gone and her mobile phone pinging from a desolate volcanic landscape. In The Whisper of the Fire, Javier Castillo weaves a potent thriller of love, loss and survival in which the elements themselves become adversaries. Mario’s search unfolds against the primeval backdrop of lava fields and erupting passions, unearthing secrets that challenge what it means to truly live. With more than 2.5 million copies sold in Spain alone, this novel stakes its claim as one of the defining suspense reads of 2025. Castillo reshapes the genre by bending emotional urgency and unstoppable momentum into one relentless story. Prepare for a narrative where the clock ticks, the ground trembles, and no one is safe.