Darkness Follows Book 3. NEXT (en Inglés) - Geoffrey Conklin

Drawn out of a long retirement, Detectives Drake Dawson and Jeremy Gates bypass official channels to hunt the cartel through a dark criminal underworld, trying to find a new form of mysterious dark energy which could likely threaten the entire world if the cartel discovers how to activate it.

For Drake Dawson, it's a matter of having one last chance to solve their biggest case and end their careers with a clean slate; for Jeremy Gates, it is a final, desperate chance at the vengeance he's been nursing since his daughter's mysterious disappearance.

The investigation takes a dark and personal turn when they infiltrate the depths of the cartel itself.

Instead of the mysterious energy source, they find Willow, a young woman held captive by the cartel who reminds Jeremy of his lost daughter. Rescuing her changes the stakes-she isn't just a victim; she knows the cartel's tactics and movement, and she helps the detectives to discover the location of the cartel's final operations.

But by the time they arrive at the cartel's headquarters, the dark energy may have already been unleashed. The entire world may now be at stake, and only the detectives and their newly found partner have the knowledge of how to stop it.