Julia, an online vlogger from Germany, comes to the US to visit her cousin Hannah. Upon her arrival, Julia falls fatefully ill, prompting Hannah's suspicion of the strange and sudden illness. When unusual happenings start taking place in her home, Hannah begins a relentless internet search to discover the cause. She comes across Julia's vlog entries and finds herself immersed deep in the web - too deep - in a place where terror knows no end.
Eve Duncan is contacted, 10 years after the disappearance and murder of her 7-year-old daughter Bonnie, by a man claiming to be her killer. Taunted by his clues about Bonnie's case and his threats to kill again, she throws herself into her career as a forensic sculptor and works to close the case.
Death strikes a mortal blow... to a common house plant. This plunges little Audrey into her deepest fear, that one day her mother will meet the same fate.