No Signal, All Secrets by MICHELLE DOUGLAS

When six longtime friends reunite on a billionaire's secluded private island for what should be the perfect escape, the luxury quickly gives way to isolation. With no phone signal, no internet, and no easy way off the island, simmering resentments and dangerous secrets begin to surface. As trust fractures and bodies start to fall, everyone becomes both a suspect and a target. In a place where escape is impossible, the greatest threat may not be the killer—but the people you've called friends for years.

Dark, atmospheric, and relentlessly suspenseful, No Signal, All Secrets delivers a gripping blend of psychological horror, survival thriller, and locked-island mystery that will keep readers turning pages until its chilling final revelation.