Stripped down to essentials, the plot is the basic "hero must save the earth." However, it's well embellished with a fast paced narrative and enough twists and turns to hold my interest throughout the book.
The main character, Dr. John Dee (who bears at least a passing resemblance to Armin Shimerman's "Deep Space Nine" character, Quark)is very much a Renaissance man--alchemist, astronomer, mathematician and spy--and he's not averse to taking a profit on the side. When Marie de Medici imprisons him in 1575 he is saved by an alien benefactor, Dyckon. Dyckon is a member of a long-lived alien race, the Roc, that has come to observe the evolution of humans. Saving Dee, though, is in direct defiance of regulations prohibiting contact between the Roc and the humans. Dyckon has no real idea what to do with Dee and places him in suspended animation. As Dyckon's career progresses, though, the evidence of his past indiscretion becomes too great a political liability and he resolves to dispose of Dee. Instead of simply killing Dee, though, Dyckon first revives him and Dee persuades Dyckon to release him on earth. Despite the passing of years (it's now 2099), Dee is certain that human nature will not have changed and his survival skills will serve him as well in the twilight of the 21st century as they did in the 16th century. The catch, though, is that the earth is headed toward either annihilation or slavery within the next two years. If Dee can't avert the disaster, he will share that fate. The final two-thirds of the book detail his efforts to defeat Royal Newton, whose attempts to develop an energy source using anti-matter give rise to the impending disaster.
I found Dr. Dee to be an enjoyable character--like Quark, he's something of a good-hearted scoundrel. While he always strives to advance his own interests, he's loyal to his Queen and his friends. He's self-confident, observant and clever, a quick study, but when faced with a situation from which he cannot extricate himself by his wits alone, he kills efficiently, without hesitation or remorse. Royal Newton, on the other hand, is greedy, arrogant, and abusive to his subordinates. However, he's not a madman, intent on destruction--he genuinely believes he's developing a power source which will make him wealthy, not a weapon which will destroy his world. It's measure of his arrogance that he never gives serious consideration to the possibility of destruction. (Or perhaps it's a measure of his lack of complexity--but this story is driven more by plot than character.)
Although I did enjoy the book, it felt a bit like it had been rushed into publication. There were several minor inconsistencies--a creature that's hatched rather than born reminiscing about his birth mother; a facility in Puerto Rico is attacked and Newton starts talking to his security chief about insurgents in Costa Rica; Newton's grandfather, R R Newton was born in "abject poverty," but later it's stated that his great-grandfather was sufficiently wealthy to begin amassing the large Newton art collection (OK, could have been on the other side of the family, but it needed a bit more explanation than was given), and even after binding two broken fingers together with a kerchief, Dee is able to put on gloves. It's minor stuff, to be sure, but it's the kind of thing that should have been caught and corrected. And I couldn't help but be surprised that, while the Stock Exchange was still going strong, the SEC was obviously defunct and without a successor.
The authors didn't fail to include plenty of Trek references, though. I particularly liked the juxtaposition of the Gutenberg Bible with the original "Star Trek" script. Then there was the research facility run by Marconi Alimo...and lots of others that Trekkers will enjoy spotting. (There are also quite a few Shakespeare references--a nod to another of Shimerman's interests.) All in all, I liked the book and found it quite readable.
