DEMON MOON is the fourth story in the Guardian series, and the second full-length book. It takes place in modern-day San Francisco, eight months after the events of DEMON ANGEL.

All of the following information about the history of the Guardians is given in DEMON MOON, but this is a more straightforward way of presenting it.

In the First Battle, Lucifer led his rebels against Heaven. In punishment, they were transformed into demons and tossed into Hell. There were also angels who refused to take sides during the First Battle; these angels were transformed into nosferatu, cursed with bloodlust and vulnerability to daylight, and sent to Earth.

The seraphim who lived in Caelum watched over humans, and protected them from demons and nosferatu. The seraphim could never completely pass for human, however, and so the people on Earth began worshipping them as gods. When Lucifer realized this, his jealousy led him to wage another war against the angels, the Second Battle.

This battle took place on Earth, and Lucifer had with him a dragon from Chaos, and hellhounds. The angels began to falter before the dragon — but mankind, witnessing the battle taking place, joined the angels. One man, Michael, managed to destroy the dragon by cutting through its heart with his sword.

After the Second Battle, the seraphim retreated from Caelum, and gave Michael the power to guard humans on Earth, and to transform other men into Guardians. Because they were once men, Guardians can pass as human, and walk among those they protect.

As you begin DEMON MOON, it helps to know that: At some undetermined point in the past, Michael’s sword–which absorbed some of the power of the dragon’s blood–was lost. It was recovered in 1811 during the events of “Falling for Anthony.” Also, Colin Ames-Beaumont was turned into a vampire in “Falling for Anthony” — Hugh and Lilith were present, and Hugh swore to protect Colin with his life.

Colin’s blood is tainted by Michael’s sword, and he has an anchor to Chaos. In DEMON ANGEL, he and Selah spent a week in that realm before Michael rescued him. At the end of DEMON ANGEL, Colin and Savitri Murray were taken to Caelum and hidden, so that neither Lucifer or the nosferatu could harm them.

In DEMON ANGEL, Lucifer lost a wager with Michael, and the Gates to Hell have been closed. A few demons remain on Earth, but the rest are trapped inside Hell.  Before DEMON ANGEL, most vampires in San Francisco weren’t aware of the existence of Guardians and demons, although they are vaguely aware of nosferatu. But because the nosferatu destroyed the elders of the San Francisco vampire community when Polidori’s nightclub was burnt to the ground, the vampires are looking for a new leader, one capable of standing against the more powerful demons and nosferatu … and Guardians.

After DEMON ANGEL, Lilith and Hugh began working for Special Investigations, recruiting vampires, Guardians, and humans.