Evolution (3) The only hope humanity has to meet the Aliens, on an even footing, is with US resources, so Scotty must win the Presidency. Preparing for Aliens aren't the only challenge the host/Companion cadre face. Robert Branch (AKA Abdul Ali Hassan) is loose in the world, and he is inhabited by a Demon, the antithesis of Companions. Branch and his Demon escaped to Syria in 2012, and began organizing groups of Saddam Hussein's officers and fighters. The power behind the throne of ISIS is evil incarnate.
A Barsoom Story (2) At the end of the first book, A Princess of Mars, John Carter is unwillingly transported back to Earth. The Gods of Mars begins with his arrival back on Barsoom (Mars) after a ten-year separation from his wife Dejah Thoris, his unborn child, and the Red Martian people of the nation of Helium, whom he has adopted as his own. Unfortunately, Carter materializes in the one place on Barsoom from which nobody is allowed to depart: the Valley Dor, which is the Barsoomian afterlife.
The first book in the Skylark series and pits the hero, Dick Seaton, against Marc "Blackie" DuQuesne. Seaton is intelligent, good-looking, young, and capable. So is DuQuesne, but he is totally unprincipled and has a lot of money. Seaton is an idealistic scientist making his discoveries for the good of mankind. DuQuesne is pragmatic, out only to gain personal power and enrich himself, and will go to any lengths to win.
A Barsoom Story (5) Tara meets Prince Gahan of Gathol, and is initially unimpressed, viewing him as something of a popinjay. Later she takes her flier into a storm and loses control of the craft, and the storm carries her to an unfamiliar region of Barsoom. After landing and fleeing from a pack of ferocious Banths (Martian lions), she is captured by the horrific Kaldanes, who resemble large heads with small, crab-like legs.
Imperium (2) The Carthaginians are marching to destroy Rome and it is up to Ky, a test pilot from the future thrown into an alternate past, to keep the once mighty Roman Empire from being destroyed. As Ky gathers Roman and Caledonian forces together to form a new Britannic Empire to defend against the Carthaginian host, he must also struggle to contend with a malfunctioning AI implanted in his brain that is slowly gaining sentience. Thankfully, Ky is not alone.
Evolution (1) Caleb Connor's life is out of control: understatement! An extraterrestrial space ship crashed on his campsite, and an ancient, ethereal alien took up residence in his head. He doesn't get along with the alien, partially because the alien thinks he landed in a defective human. The Army investigates the crash, and the General in charge has more plans than just protecting the country. Throw in a pretty doctor and a hole in the fabric of creation... Yep. Very out of control.