This collection of three novels and a novella released today.

Here’s the back cover blurb:

The arch-demon, Pride, leads demon-kind in an ancient plan to open a gate between worlds, so the vast armies of Hell might march forth and conquer the Earth. This becomes easier once nuclear weapons become available, in 1945, which have power enough to punch brief holes in reality.

However, Pride needs more than just a massive quantity of energy: only a half-demon can stabilize the connection for safe passage. The only option available is a girl that calls herself the Hunter and absolutely hates demons, because Pride made the mistake of murdering her parents when she was three years old. She’s supported by the Ashen Blades, an organization of human demon hunters that serve as Earth’s last line of defense in the invisible war between humanity and the ceaseless tide of evil.

Pride begins with subtle manipulation and tests of the Hunter’s capabilities, then progresses to taking hostages, in an attempt to force her cooperation, but he never counted on how stubborn the girl can be, because she’d sooner die, since the whole of humanity is on the line.

In 1945, their conflict takes them from New York City to White Sands, New Mexico and the range the first atomic bomb was tested on. In 1972, they fight another battle in the jungles of Vietnam as Pride works to open a portal in the war zone. In 1986, a summer camp for teens becomes the backdrop as some of the arch-demon’s minions make a third attempt at opening a portal. In 2024, Pride runs for President of the United States, in an attempt to gain both access to nuclear weapons and sufficient resources to arrange everything, to the last detail, including capture of the Hunter.

Will the Hunter and her friends stop Pride once and for all, or will he succeed in opening a portal, allowing him to feed humanity to his mysterious master?

But you may be more interested in the description of book one, which you can download for free, as a demo of things to come:

The half-demon girl who calls herself the Hunter never really considered why she wanted all demons dead, but when she’s presented with the one responsible for killing her parents, she loses all rationality, going on the warpath.

It started with a crying widow and a stack of letters, leading the Hunter’s private detective partner, Clayton Simmons, to investigate a series of financial crimes. These threads all lead to the mysterious Otto Vogerath, who’s rumored to be a mobster.

At the same time, the Hunter’s earliest memories begin coming into focus, giving her clarity about the death of her parents at the hands of the very same, because Vogerath isn’t just a mobster: he’s also a demon that claims to be the serpent from the Garden of Eden.

The duo and their allies are soon caught in a complex spider’s web of mystery, involving conspiracies, murders, atom bombs and the demon’s plot to tear a massive hole in reality, all of which revolves around the life of the Hunter. Worse still, the demon requires the Hunter’s cooperation for his plans to succeed and will do almost anything to get it, repeatedly proving to her that everyone she cares for is in danger, so long as she stands in the way of what he wants.

Will Simmons and the Hunter save the world or will the serpent succeed in opening a portal to Hell, so legions of demons can march forth to conquer the world?