Unnatural Cause - Max Garwood - Bog

In this adventure suspense, a mysterious man appears in patent attorney Marc Wayne's office. Listing the recent deaths of political leaders, the man demonstrates a device that can create a deadly embolism from a remote location. Though the frightful research to commit consequence-free murder has been locked away since World War II, killers are using this lethal invention to shape world power. With the President of the United States in the murderous crosshairs, Marc and his FBI special agent sister, Mallory, thwart the assassins, only to find he and Mallory played right into the mastermind's plan.