11:47 PM. A glitchy screen. An uninvited guest. Leo thought the "History Project – Group 4" chat would be filled with boring rubrics and Sam’s endless memes. He was wrong. When a mysterious user named The_Grey_Lady joins the locked server, the screen frosts over and a century-old mystery leaks into the present day. She sends one photo: a girl in a lace dress standing before a heavy iron door. But it’s not just a creepy image. The silver locket the girl is clutching in the photo is the exact same one Leo saw in his friend Maya’s backpack earlier that day. Now, Leo, Maya, and their friends are caught in a race against time to find a lost ledger and a key that has been missing for thirty-six thousand days. As the digital glitches turn into real-world hauntings, the group must solve the mystery of the girl behind the iron door—before they become part of the history they’re supposed to be studying. Perfect for fans of Small Spaces and Goosebumps , this middle-grade supernatural mystery proves that some secrets are better left deleted.