What is hyper-Calvinism?

In this interview, Reformed evangelical statesman and British author Iain Murray assesses the state of evangelicalism in Britain and America. What’s the state of preaching today? Is hyper-Calvinism a threat? When do Calvinists become prejudiced in their thinking, and what does John Wesley have to teach them? Also, more Martyn Lloyd-Jones stories from this former Lloyd-Jones assistant!