High-Tech SF. In the near future, the experimental nano-drug Nexus can link human together, mind to mind. There are some who want to improve it. There are some who want to eradicate it. And there are others who just want to exploit it. When a young scientist is caught improving Nexus, he's thrust over his head into a world of danger and international espionage -- for there is far more at stake than anyone realizes.
Only Time Will Tell (Clifton Chronicles) by Jeffrey Archer. Harry Clifton’s life changes when he wins a scholarship to a prestigious boys’ school and learns that his lineage may be quite different than he has been told. (Book 1 of 5)
Japanese-American Rei Shimura is a 27-year-old English teacher living in one of Tokyo's seediest neighborhoods. Her independence is threatened however, when a getaway to an ancient castle town is marred by murder. Rei is the first to find the beautiful wife of a high-powered businessman, dead in the snow. Taking charge, Rei searches for clues by crashing a funeral, posing as a bar-girl, and somehow ending up pursued by police & paparazzi alike.