Lars Kepler is the internationally bestselling pseudonym for Swedish husband-and-wife writing duo Alexander Ahndoril and Alexandra Coelho Ahndoril. Famed for their heart-pounding Joona Linna thriller series, the Keplers have captivated millions of readers worldwide with their masterful blend of relentless suspense, intricate plotting, and deeply human characters. Since their explosive debut with *The Hypnotist* in 2009, their novels have been published in more than 40 languages and consistently top bestseller lists across Europe and beyond. The couple’s unique collaboration—written in secret at first—draws upon their backgrounds in theater, literature, and journalism, infusing their stories with cinematic flair and psychological depth. As Lars Kepler, Alexander and Alexandra combine their love of gripping storytelling with an unflinching look at the darkness that haunts the human soul. Their books have earned critical acclaim and a devoted global fanbase, making Lars Kepler one of Sweden’s most widely read and influential contemporary authors.