A former government agent in France, who has failed at an assignment and been disavowed, is deported back to the USA, where he can only find work at a low-rent detective agency. He soon gets involved with a woman with ties to a crooked gambling club owner, who is a client of his agency.

Presented by Paul McGann, The Cavern Club and LA Factual have come together to produce "The Cavern Club: The Beat Goes On" - a unique documentary feature, telling the untold, complete and colourful story of the 'greatest club in the world'.