How can you protect your child from themselves?

When Michael Langford posted a live video on social media, he never knew who was watching. After agreeing to meet the new girl in class, Michael disappears.

Blake Langford is arrested during a routine training exercise and accused of compromising Her Majesty's Government by using a new spyware known as The Crystal.

When secrets from the past bring new developments into the investigation, Blake and Paula have to risk everything to discover what happened to Michael.

When everything you thought was true turns out to be a lie, where do you turn next?