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.  You can find out more about Tortoise: Download the Tortoise app - for a listening experience...

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...