Future Imperfect — Simon Rose

Andrew Mitchell was one of the leading experts in highly advanced technology in Silicon Valley, until he vanished following a car accident, which also injured his son, Alex. When a mysterious app later appears on Alex's phone, he and his friend Stephanie embark on a terrifying journey involving secret technology, corporate espionage, kidnapping, and murder in a desperate bid to save the future from the sinister Veronica Castlewood.