Charlie and Margaret Marder, two rising stars in 1960s Washington DC, know all too well how shady the tangled web of power in the nation's capital can operate. But as they settle into their new lives, they are recruited by an old friend, Robert Kennedy to investigate a secret that could threaten the presidency and the entire country's security.

Charlie and Margaret travel to Los Angeles, where they are confronted by a completely different, but no less sinister power dynamic. Instead of power hungry politicians, they must navigate glamorous musicians and actors. At the center of it all is Frank Sinatra, a close friend of John F. Kennedy, and a rumored mob affiliate whom Charlie and Margaret are tasked with investigating. Corruption and ambition form a deadly mix in this thrilling sequel to The Hellfire Club.