Elon Musk is one of the most powerful men in the world. He's a billionaire, the founder of SpaceX, Tesla and more. To his followers, he's a hero; to his critics, a far-right rabble rouser. But for someone so public, there's one part of his life that's less well known. Elon's Spies investigates how this free-speech champion uses private investigators and surveillance to target everyone from whistleblowers at his companies, to online critics and people in his own life.

In 2018, Vernon Unsworth is at the centre of a global news story. He plays a crucial role in rescuing a young football team who became trapped in a flooded cave system. Overnight, he is a hero. But there's a darker side of his story that's less well known. That's where Elon Musk and his private investigators come in...

When Martin Tripp worked at Tesla, he took the advice of his boss Elon Musk - if you discover a problem, tell me about it. But when Martin shares his concerns, his world begins to spiral out of control.