From internationally bestselling author LJ Ross comes a tense, atmospheric thriller that explores how far we'll go to understand―and survive―the darkness around us. There's a killer inside all of us… In the remote hills of western Ireland, fear spreads as the locals struggle to make sense of a killer who is seemingly one of their own... Dr. Alexander Gregory, a psychologist recovering from the collapse of a high-profile criminal profiling unit, wants nothing more than a quiet life to finally sit and think things through. But his rare ability to understand the minds of violent offenders makes him hard to ignore―especially when a small town is shaken by a brutal murder. Reluctantly pulled into the case, Gregory finds himself confronting not only a cunning predator, but the darker corners of his own mind. From internationally bestselling author LJ Ross comes a tense, atmospheric thriller that explores how far we'll go to understand―and survive―the darkness around us.  "Complex and intriguing." ― Library Journal "Tightly written and totally propulsive. I couldn’t turn the pages fast enough." ― Brian Freeman, New York Times bestselling author of Photograph "Everyone’s a suspect in LJ Ross’s IMPOSTER―a harrowing murder investigation set against the beautiful rural backdrop of Mayo County, Ireland. With sharp insight and emotional depth, Ross masterfully builds a suffocating small-town mystery that echoes the tension of a locked-room puzzle while delving into the darkest reaches of the serial killer psyche. Criminal profiler Alexander Gregory emerges as a fascinating addition to crime fiction." ― Hannah Morrissey, USA Today bestselling author of The Unlucky Ones "Readers clear schedules for every LJ Ross release, and Impostor will be no exception. Launching a gripping new series with forensic psychologist Alexander Gregory, this smart, twisty thriller crackles with tension from start to finish. In Ross’s hands, however, Impostor is much more than Dr. Gregory's quest to solve a murder: it’s a compelling psychological exploration of buried secrets and dangerous obsession. I loved it." ― Gregg Olsen, #1 New York Times Bestselling Author LJ Ross is the author of the #1 international bestselling series of DCI Ryan mystery novels and her books have sold more than eleven million copies since 2015. Louise was born in Northumberland, England. She studied undergraduate and postgraduate degrees in Law at King’s College London and studied abroad in Paris and Florence. She spent much of her working life in London, where she was a regulatory lawyer for a number of years before taking the decision to change career and pursue her dream to write.