"Merril is one of Silicon Valley's leading software engineers, but her life disintegrates when her younger sister Angie vanishes on her way home from college. A year later, when the police have long abandoned their search, Merril assembles all the digital material Angie has left behind and sets about building herself a digital simulation of her sister. The resultant 'virtual Angie' offers her some solace - until, that is, it starts to reveal new details about the real Angie's disappearance..."-- Publisher website.
