After her mother’s Alzheimer’s diagnosis, Billie Levine revamped her grandfather’s private investigation firm and set up shop in the corner booth of her favorite North Jersey deli hoping the free pickles and flexible hours would allow her to take care of her mom and pay the bills. So when Tommy Russo, a rich kid with a nasty drug habit, offers her a stack of cash to find his missing girlfriend, how can she refuse? At first, Billie thinks this will be easy earnings, but then her missing person's case turns into a murder investigation and Russo is the detective bureau’s number one suspect.

It’s 1933, and Ivor Castle, Oxford-educated and Jewish, arrives in Palestine to take up a position as assistant to the defense counsel in the trial of the two men accused of murdering Haim Arlosoroff, a leader of the Jewish community in Palestine whose efforts to get Jews out of Hitler’s Germany and into Palestine may have been controversial enough to get him killed.

Paris, June 1940. The Nazi occupation of Paris begins. Detective Eddie Giral - a survivor of the last World War - watches helplessly on as his world changes forever. But there is something he still has control over. Finding whoever is responsible for four murdered refugees: the unwanted dead, forgotten amid the headlines. To do so, he must tread carefully between the Occupation and the Resistance, all the while becoming whoever he must be to survive in this new and terrible order descending on his home.

It's 1937. Fear and suspicion stalk the Continent. A million have died in Stalin's Great Purge and the Nazi terror grips Germany. But British intelligence is still trying to work out who the enemy is. As Europe heads towards war, treason is in the air. British spymasters know there is one Soviet agent in their ranks, codenamed Agent ‘Archie', and there's a frantic search to find them. What they don't know is that he is not the only traitor.

Lyndsey was once a top handler in the Moscow Field Station, where she was known as the "human lie detector" and praised for recruiting some of the most senior Russian officials. But now, three Russian assets have been exposed - including one of her own - and the CIA is convinced there's a mole in the department. 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.