Four friends. One remote villa. A 12-hour memory gap that hides a deadly secret. A girls' trip to a stunning, isolated villa on the Mexican coast is Chloe Miller's last chance. She's desperate to repair the decade-old betrayal that shattered her friendship with Melissa. After a night of "reconciliation cocktails," it seems like healing is finally possible. But Chloe wakes up to a pounding headache, a disorienting 12-hour blackout, and an unnerving, perfect silence. Melissa's room is empty. Her phone and passport are still there. And Melissa is gone. Her other friends, Amanda and Natalie, are frantic. But their stories are patchy, their sympathy strained. They talk about a violent argument. They point to broken glass in Chloe's trash, a dark stain on the floor... and all the evidence seems to point to Chloe herself. The villa, once a paradise, is now a prison. With every passing hour, the unspoken accusations grow, and her own mind remains a black hole. Forced to question her own sanity, Chloe must race to uncover the truth. Is she a monster? The One Who Went Missing is a suffocating, high-paranoia psychological thriller and the third book in the unputdownable Deadly Itinerary series. If you love locked-room mysteries, unreliable narrators, and twists you'll never see coming, you'll be obsessed with this chilling story. Fans of You're Not Alone Here will be horrified to discover that some vacation nightmares are part of a much larger, more sinister network.