The Slayer's Heart

Love can save the world. It can also destroy it.

The war beneath the surface has reached its final act.

Darren James has embraced the impossible, becoming one of the most powerful Artists alive. Andy has spent her life hunting monsters, only to discover that the one she trusts most has become the only person capable of saving humanity.

But every victory has carried a price.

A captive ally holds the key to everything.

An ancient enemy has spent years preparing the perfect trap.

And the bond between Darren and Andy - once their greatest weakness - may be the only weapon capable of ending the war.

As forgotten truths emerge about the terrifying beings known as the Nulls, everything they believed about monsters, Hunters, and Artists begins to unravel. The enemy isn't what history claimed.

Neither are they.

Forced into a desperate final confrontation inside the ruins of an abandoned opera house, Darren and Andy must choose between sacrifice and survival, duty and desire, vengeance and forgiveness.

Some hearts are hollow.

Others can change the world.

In the end, victory won't belong to the strongest.

It will belong to those willing to love without fear.

The Slayer's Heart is the breathtaking conclusion to the Underwell Trilogy - a dark supernatural thriller where forbidden love, psychological suspense, and explosive action collide in a finale that changes everything.