Johnny Depp v Amber Heard was the celebrity trial of the century.

He won, she lost. But was Amber Heard the target of an organised trolling campaign? A former spy puts Alexi reluctantly on the trail, but he quickly discovers this is much more than a story of celebrities at war.

This is Who Trolled Amber? – a new podcast series about how our own thoughts and opinions can be moulded without us even realising.

Who Trolled Amber is the latest series in Tortoise Investigates, the home of Tortoise's award-winning investigative series.