Lyndsey Duncan worries her career with the CIA might be over. After lines are crossed with another intelligence agent during an assignment, she is sent home to Washington on administrative leave. So when a former colleague - now Chief of the Russia Division recruits her for an internal investigation, she jumps at the chance to prove herself. With years of work in question, and lives on the line, Lyndsey is thrown back into life at the agency, this time tracing the steps of those closest to her.