Mr Brightside hasn't left the UK charts in 18 years. How did it end up like this? An interactive investigation with karaoke, lip-syncing and absolute bangers. Tim and Hannah come across a viral video of an Irish bar singing Mr Brightside to their recently departed friend. Reading online comments they uncover stories of incredible people " all united by one song. Together they conduct an investigation into the chart-busting phenomenon and give you an unashamedly good night out in the process.