After her boss narrowly escaped political defeat, Kit Marshall is settling into life as a busy congressional staffer. While attending an evening reception at the United States Botanic Garden, Kit’s best friend stumbles upon the body of a high-ranking government official. The chairwoman of a congressional committee asks Kit to investigate, and she finds herself once again in the thick of a murder investigation. The complications keep coming with the unexpected arrival of Kit’s younger brother Sebastian, a hippie protestor who seems more concerned about corporate greed than the professional problems he causes for his sister. To make matters even worse, the romantic lives of Kit’s closest friends are driving her crazy, diverting her attention from the mystery she’s been tasked to solve. The search for the killer requires her to tussle with an investigative journalist right out of a noir novel, a congresswoman fixated on getting a statue of James Madison installed on the Capitol grounds, and a bossy botanist who would do anything to protect the plants he loves. When the murderer sends a threatening message to Kit via a highly unusual delivery mechanism, Kit knows she must find the killer or risk the lives of her friends and loved ones.