Teenager Cameron Finnigan from Horsham in Sussex is arrested in a dawn raid. Behind it all is a shadowy online network called 764, so dangerous it’s being hunted by the FBI and global law enforcement.

The BBC investigates how Finnigan became entangled in a world where teenagers are coerced into live streaming rituals, self-harm and murder plots.

Presenter Jo looks deeper into the predators behind 764 and explores how they are reaching vulnerable children in their bedrooms.

Written and Produced by Jo Palmer.