Sign-In
Cart
Somnambulist Protocol
Paperback
Publisher: Antillas Publishing House
Published: Feb 24 2026
Pages: 238
Weight: 0.62
Height: 0.54 Width: 5.50 Depth: 8.50
Language: English
Darrow Caldwell is an overnight polysomnographic technologist at the Somnus Alpine Institute, a highly exclusive and completely isolated sleep clinic hidden high in the Swiss Alps. Accessible only by a private cable car and catering strictly to ultra-wealthy clients suffering from severe parasomnias, the clinic is a luxurious fortress of slumber. But during a massive blizzard that severs all ties to the outside world, the fortress becomes an inescapable trap.
While monitoring the live EEG brainwaves, Darrow notices Patient 4 is in deep, Delta-wave sleep. Yet, the live security cameras show the patient getting out of bed, picking up a heavy fire extinguisher, and brutally bludgeoning the night guard to death with wide, blank eyes. Patient 4 is a Somnambulist Assassin-a man psychologically conditioned to execute complex, targeted murders while completely unconscious, effortlessly bypassing lie detectors and psychological screenings. Hacking the director's encrypted files, Darrow uncovers a darker motive: the clinic has been illegally mining the subconscious minds of its billionaire patients for corporate secrets, and a rival corporation has sent the sleeping assassin to wipe out the facility and erase the evidence.
Operating purely on primitive brainstem logic, the sleepwalking killer hunts strictly by tracking voluntary movement and panic responses. Cornered in the sterile pharmaceutical dispensary and unable to physically overpower the highly-trained assassin, Darrow is forced into a terrifying, desperate gamble. He spikes a water bottle on the counter with a lethal dose of liquid potassium chloride. Then, as the killer begins to batter down the reinforced door, Darrow injects himself with a fast-acting surgical paralytic. Collapsing to the cold floor, he is completely conscious but unable to move a single muscle, speak, or even blink. Forced to watch in absolute, terrifying stillness, Darrow must play dead and pray his trap works before the unthinking monster realizes he is still alive.
Also from
Rook, Harlan
Also in
Mystery & Thriller
The Underworld U.S.A. Trilogy, Volume I: American Tabloid, the Cold Six Thousand; Introduction by Thomas Mallon
Ellroy, James
Hardcover
Coffin Road: An Utterly Gripping Crime Thriller from the Author of the China Thrillers
May, Peter
Paperback
Sabine's Notebook: In Which the Extraordinary Correspondence of Griffin & Sabine Continues
Bantock, Nick
Hardcover
The Girl with the Dragon Tattoo (Movie Tie-In Edition): Book 1 of the Millennium Trilogy
Larsson, Stieg
Paperback
The Golden Mean: In Which the Extraordinary Correspondence of Griffin & Sabine Concludes
Bantock, Nick
Hardcover
Big Little Truths: Reese's Book Club: A Novel: The Sequel to Big Little Lies
Moriarty, Liane
Hardcover
The Pirate Queen: A Novel from the New York Times Bestselling Author of the Frozen River
Lawhon, Ariel
Hardcover
The Altar of Pergamon: The Mystery of the Dark Angel and the Future of the World
Cahn, Jonathan
Hardcover