In 1982, two teenagers-serial killer survivor Emma Lewis and US Marshal candidate Travis Bell-are recruited by the FBI to interview convicted juvenile killers and provide insight and advice on cold cases. From the start, Emma and Travis develop a quick friendship, gaining information from juvenile murderers that even the FBI can't crack. But when the team is called in to give advice on an active case-a serial killer who exclusively hunts teenagers-things begin to unravel. Working against the clock, they must turn to one of the country's most notorious incarcerated murderers for help: teenage sociopath Simon Gutmunsson. Despite Travis's objections, Emma becomes the conduit between Simon and the FBI team. But while Simon seems to be giving them the information they need to save lives, he's an expert manipulator playing a very long game...and he has his sights set on Emma. Captivating, harrowing, and chilling, None Shall Sleep is an all-too-timely exploration of not only the monsters that live among us, but also the monsters that live inside us.

A historical mystery about a girl who risks everything to track down a vicious serial killer-for fans of The Enigma Game and Last Night at the Telegraph Club.

Virginia, 1943: World War II is raging in Europe and on the Pacific front when Kit Sutherland is recruited to help the war effort as a codebreaker at Arlington Hall, a former girls' college now serving as the site of a secret US Signal Intelligence facility. But Kit is soon involved in another kind of fight: government girls are being brutally murdered in Washington DC, and when Kit stumbles onto a bloody homicide scene, she is drawn into the hunt for the killer.

To find the man responsible for the gruesome murders and bring him to justice, Kit joins forces with other female codebreakers at Arlington Hall-gossip queen Dottie Crockford, sharp-tongued intelligence maven Moya Kershaw, and cleverly resourceful Violet DuLac from the segregated codebreaking unit. But as the girls begin to work together and develop friendships-and romance-that they never expected, two things begin to come clear: the murderer they're hunting is closing in on them...and Kit is hiding a dangerous secret.

After a harrowingly close contact with juvenile sociopath Simon Gutmunsson, junior FBI consultants Emma Lewis and Travis Bell went their separate ways: Emma rejected her Quantico offer and Travis stayed to train within a new unit of the FBI Behavioural Science division. But the unit's latest case is feeling eerily familiar and Kristin Gutmunsson-Simon Gutmunsson's eccentric twin-reaches out to Travis to send a warning: Emma is in peril. When Travis and Kristin turn up evidence that points back to Daniel Huxton, the serial killer that Emma had escaped, things become more complicated. With a copycat on the loose, Emma returns to Quantico and is thrown back into her past traumas. Compelled to prevent more tragedy-even if it means putting herself in danger-Emma turns to Simon for help once again. But Simon is keeping secrets that could impact their entire investigation. Will the team be able to stop the Huxton copycat before time runs out for his next victims?