Power Play by Catherine Coulter
Natalie Black, the U.S. ambassador to the Court of St. James, has returned to Washington, her job in jeopardy. Her fiancé, George McCallum, Viscount Lockenby, has died in a car accident, and mysterious rumors begin that she’s responsible begin to surface: she broke off the engagement and, heartbroken, he killed himself. Then someone tries to force her off the M-2 outside London. Again, rumors claim it was a sympathy ploy. When she returns to the United States, she’s nearly killed when a car tries to mow her down while she’s out for a run. No one believes her except FBI Special Agent Davis Sullivan.