Some doors should never be opened.

Peter Samuels opened one.

What began as an archaeological dig in the Egyptian desert ended in blood, fire, and something that should not exist. The only survivor of a massacre no one can explain, Peter returns to England with a single truth:

Demons are real.

Armed with a mysterious blade that can destroy them, and joined by the formidable Cedric Abuthnott, Peter is drawn into a hidden world of ancient evils, haunted places, and forces working to keep it all secret.

From cursed tombs to haunted castles, each case brings them closer to a terrifying reality:

Not all demons come from the same place.
And not all of them can be killed.

Hunted by shadowy agencies and guided by forces he barely understands, Peter must decide what he has become.

A survivor... or something far more dangerous.

The Demon Series is a gripping supernatural thriller saga of dark forces, deadly secrets, and the men who hunt them.