A synopsis from the back cover:
World renowned neurosurgeon Jon Ritter is on the verge of a medical breakthrough that will change the world. His groundbreaking surgical treatment, using transplanted non-human stem cells, is set to eradicate the scourge of Alzheimer’s disease and give hope to millions. But when the procedure is slated for testing, it all comes to an abrupt and terrifying halt. Ritter’s colleague is gunned down and Ritter himself is threatened by a radical anti-abortion group that not only claims responsibility, but promises more of the same.
Faced with a dangerous reality but determined to succeed, Ritter turns to his long-time colleague, corporate biotech CEO Richard Stillman, for help. Together, they conspire to conduct a clandestine clinical trial in Seoul, Korea. But the danger is more determined, and more lethal, than Ritter could have imagined.
After successful surgical trials, Ritter and his allies are thrown into a horrifying nightmare scenario: The trial patients have been murdered and Ritter is the number one suspect. Aided by his beautiful lab assistant, Yeonhee, Ritter flees the country, now the target of an international manhunt involving Interpol, the FBI, zealous fanatics and a coldly efficient assassin named Fiest.
That synopsis takes you through about half the book. Ritter is left in South Korea without a passport and hunted by the local police. If he were a James Bond type, he would have no trouble getting back to the U.S., but Ritter is rather unsophisticated in these matters. The remainder of the book follows Ritter along his nail-bitting journey back to the U.S. to clear his name, all the while followed by the assassin. Wyler makes the plot work.