After having clawed her way back to life, Maddie is haunted by visions, and driven by her unfinished business. Meanwhile, her bestie, Simon, is stuck in the purgatorial state that exists in Split River High. He becomes obsessed with uncovering the school’s secrets: chiefly, why have so many perished at the campus? And what has Mr. Martin, the ghosts’ longtime mentor, been hiding? The closer Maddie, Simon, and their pals get to the truth, the more questions they unearth – and the more peril they put themselves in …

A teen in 2024 accidentally time-travels to 2003, days before a masked killer murders her sister. Can she change the past without destroying the future?

　　来自神秘账号在社交媒体上的艾特牵扯出一件诡异的凶杀案，使得本来渐行渐远的好友二人不得不联起手来，追查真相。昔日好友缘何形同陌路？面具杀手是否另有目标？惨死的少女究竟是何身份？隐匿于互联网之下的暗潮汹涌，等你揭晓。