Alex's bible classes started taking over his life — then he discovered who was really running them. Emma's mum went from crystals to a clique that believes in aliens and past lives. And Tim and his dad fell into QAnon together, but what happened when one wanted to leave? We find out how cults and conspiracy theories can isolate you from your family, friends, even flatmates. And we hear what it's like to lose a loved one to a dangerous belief system.