UPDATE (1/18/19): So long and thanks for all the fish! 
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Vampires vs. Aliens is a PG-rated vampire/SF story.

The 25th Hour is the first of 3 PG-rated books in my Young Adult SF trilogy, The Advs. of Mackenzie Mortimer. Mac's a typical jr high geek: shy, awkward, late with his homework, and always late for class. He's never got enough time; after all, there are only 24 hours in a day. But when he finds his grandfather's pocket watch, he discovers his days have an extra hour. The watch can add up to 60 minutes to a single day by freezing time. When a crisis looms, time is running out... but fortunately, Mackenzie Mortimer has a few more minutes than anyone else. The Tomorrow Paradox is Book 2 in the series.

Halos & Horns is an R-rated fantasy. Exiled on Earth, naive angel Gabriel & amoral demon Lucifer, in the human guise of "Gabe Horn" & "Lou Cypher", form an unlikely partnership as private investigators in Las Vegas. Their adventures take them to the 7 heavenly realms, the 9 levels of Hell, the dream realm of the Dreamscape & even through time to Camelot. They encounter  angels, demons, witches, warlocks, vampires, & other supernatural creatures. There's also the Halos & Horns Bonus Material book.

Fangs & Fur, a PG-13-rated fantasy, delves into the lives of the vampires & werewolves you only think you know. Previously relegated to the background of the Halos & Horns fantasy saga, these vampires & lycanthropes have their own stories to tell. Flashbacks is Book 1 in the series.

Cops and Robbers is a PG-13 rated quirky crime drama. An FBI agent sets up a bogus movie production sting to snare a mob kingpin. But the mobsters & agent become so enamored by Hollywood's glitter & glamor they try to make the film a success. Our hero's a hitman in search of the redemption he doesn't believe he deserves.