Scorpio Dragon's Blood - Alex McDonough - Bog

Travelers in Time
Fleeing his home planet, Scorpio traveled through time, only to find new dangers on the strange world called Earth!
For a mysterious alien prowling Earth's ages, time holds life-and-death opportunities. Using a strange orb, he's searching for a way to save his people from extinction, and information he must find on Earth may be his only chance for success.
His sole companion and confidante is the beautiful Leah de Bernay, a fugitive in time from the 14th century. As they venture from age of dinosaurs into twentieth century, they discover hints that Earth's technology my soon be advanced enough to help them rescue his world.
It won't be simple. The age of the dinosaurs holds fantastic dangers, and in the killing fields of the 20th century Cambodia, technology is often used for murder!
Scorpio ¿ Scorpio Rising
Scorpio Descending ¿ Scorpio Dragon's Blood
Scorpio Dragon's Eye ¿ Scorpio Dragon's Claw