Darker Things (The Lockman Chronicles Book 1) by Rob Cornell

Once employed by a shadowy government agency to battle paranormal threats, Craig Lockman has spent the last fifteen years in forced retirement. But when a teen girl shows up at his door claiming she’s his daughter, he quickly ends up back in the fight…because she has unwittingly led Lockman’s most hated enemy straight to him.

Forced on the run, he struggles to protect the girl from an onslaught of nightmarish creatures, all working for his vicious rival. It soon becomes clear if he wants to put an end to the carnage, Lockman must strike back and finally defeat a man more evil than any of the horrors he commands.

Darker Things is the first book in a high-octane supernatural suspense series guaranteed to keep you on the edge of your seat through every terrifying twist.