What happens when the clues to a murder aren't just physical, but digital? Caught in the Net presents gripping true stories of investigators entering the digital world to solve a brutal murder. In each case, detectives are up against a lack of physical clues. But every time anyone goes online, whether it's chat rooms, cellphone apps, car GPS or fitness trackers, they leave a digital trail behind them. Now investigators must enter this virtual world and follow the data - as they race against time to secure justice for victims' families and track down the killer.